#if !defined(MYLOCAL)//提出時用テンプレート #pragma GCC optimize("Ofast") #if defined(NDEBUG) #undef NDEBUG #endif #include "bits/stdc++.h" #if __has_include() #include using namespace atcoder; #endif using namespace std; using ll=long long; using dd=long double; using pll=pair; using tll=tuple; using qll=tuple; using ll2=array; using ll3=array; using ll4=array; using namespace chrono; constexpr ll INF = 1201001001001001001; struct Fast{ Fast(){ cin.tie(0); ios::sync_with_stdio(false); cout<::max_digits10); } } fast; #define EXPAND( x ) x//VS用おまじない #define overload3(_1,_2,_3,name,...) name #define overload4(_1,_2,_3,_4,name,...) name #define overload5(_1,_2,_3,_4,_5,name,...) name #define rep1(N) for (ll dmyi = 0; dmyi < (N); dmyi++) #define rep2(i, N) for (ll i = 0; i < (N); i++) #define rep3(i, S, E) for (ll i = (S); i <= (E); i++) #define rep4(i, S, E, t) for (ll i = (S); i <= (E); i+=(t)) #define rep(...) EXPAND(overload4(__VA_ARGS__,rep4,rep3,rep2,rep1)(__VA_ARGS__)) #define dep3(i, E, S) for (ll i = (E); i >= (S); i--) #define dep4(i, E, S, t) for (ll i = (E); i >= (S); i-=(t)) #define dep(...) EXPAND(overload4(__VA_ARGS__, dep4, dep3,_,_)(__VA_ARGS__)) #define ALL1(v) (v).begin(), (v).end() #define ALL2(v,E) (v).begin(), (v).begin()+((E)+1) #define ALL3(v,S,E) (v).begin()+(S), (v).begin()+((E)+1) #define all(...) EXPAND(overload3(__VA_ARGS__, ALL3, ALL2, ALL1)(__VA_ARGS__)) #define RALL1(v) (v).rbegin(), (v).rend() #define RALL2(v,E) (v).rbegin(), (v).rbegin()+((E)+1) #define RALL3(v,S,E) (v).rbegin()+(S), (v).rbegin()+((E)+1) #define rall(...) EXPAND(overload3(__VA_ARGS__, RALL3, RALL2, RALL1)(__VA_ARGS__)) template inline bool chmax(T &a, T b) { if (a < b) { a = b; return true; }return false; } template inline bool chmin(T &a, T b) { if (a > b) { a = b; return true; }return false; } template inline auto maxe(T &&v,ll S,ll E){ return *max_element(all(v,S,E)); } template inline auto maxe(T &&v){ return *max_element(all(v)); } template inline auto mine(T &&v,ll S,ll E){ return *min_element(all(v,S,E)); } template inline auto mine(T &&v){ return *min_element(all(v)); } template::type::value_type> inline U sum(T &&v,ll S,ll E) {return accumulate(all(v,S,E),U());} template inline auto sum(T &&v) {return sum(v,0,v.end()-v.begin()-1);} template inline ll sz(T &&v){ return (ll)v.size(); } inline ll Ceil(ll a,ll b){ return (a<0) ? -(-a/b) : (a+b-1)/b; } //負もOK inline ll Floor(ll a,ll b){ return -Ceil(-a,b); } //負もOK inline ll Floormod(ll a,ll m){ return Floor(a,m)*m; } //負もOK inline ll Ceilmod(ll a,ll m){ return Ceil(a,m)*m; } //負もOK inline ll Mod(ll a,ll m){ ll r=a%m; if(r<0)r+=m; return r; } //負もOK template inline T Pow(T a,ll n){ T r=1; for(; n>0; n>>=1,a*=a){ if(n&1)r*=a; } return r; } inline ll Pow(int a,ll n){ return Pow((ll)a,n); } inline ll limitmul(ll a,ll b,ll u){ return b==0||a<=u/b ? a*b : u; }//min(a*b,u) a,b,u≧0 //pair用テンプレート template inline pair& operator+=(pair &a,const pair &b){ a.first+=b.first; a.second+=b.second; return a; } template inline pair& operator-=(pair &a,const pair &b){ a.first-=b.first; a.second-=b.second; return a; } template inline pair& operator*=(pair &a,const pair &b){ a.first*=b.first; a.second*=b.second; return a; } template inline pair& operator/=(pair &a,const pair &b){ a.first/=b.first; a.second/=b.second; return a; } template inline pair& operator%=(pair &a,const pair &b){ a.first%=b.first; a.second%=b.second; return a; } template inline pair& operator+=(pair &a,R b){ a.first+=b; a.second+=b; return a; } template inline pair& operator-=(pair &a,R b){ a.first-=b; a.second-=b; return a; } template inline pair& operator*=(pair &a,R b){ a.first*=b; a.second*=b; return a; } template inline pair& operator/=(pair &a,R b){ a.first/=b; a.second/=b; return a; } template inline pair& operator%=(pair &a,R b){ a.first%=b; a.second%=b; return a; } template inline pair operator+(const pair &a,R b){ pair c=a; return c+=b; } template inline pair operator-(const pair &a,R b){ pair c=a; return c-=b; } template inline pair operator*(const pair &a,R b){ pair c=a; return c*=b; } template inline pair operator/(const pair &a,R b){ pair c=a; return c/=b; } template inline pair operator%(const pair &a,R b){ pair c=a; return c%=b; } template inline pair operator-(R b,const pair &a){ pair c=-a; return c+=b; } template inline pair operator-(const pair &a,const pair &b){ pair c=a; return c-=b; } template inline pair operator-(const pair &a){ pair c=a; return c*=(-1); } template inline ostream &operator<<(ostream &os,const pair &a){ return os << a.first << ' ' << a.second; } //tuple用テンプレート 出力用のみ template inline ostream &operator<<(ostream &os,const tuple &a){ return os << get<0>(a) << ' ' << get<1>(a) << ' ' << get<2>(a); } template inline ostream &operator<<(ostream &os,const tuple &a){ return os << get<0>(a) << ' ' << get<1>(a) << ' ' << get<2>(a) << ' ' << get<3>(a); } //vector用テンプレート template inline ostream &operator<<(ostream &os,const vector &a){ for (ll i=0; i<(ll)a.size(); i++) os<<(i>0?" ":"")< inline array& operator+=(array &a,const array &b){ for (ll i=0; i<(ll)S; i++) a[i]+=b[i]; return a; } template inline array& operator-=(array &a,const array &b){ for (ll i=0; i<(ll)S; i++) a[i]-=b[i]; return a; } template inline array& operator*=(array &a,const array &b){ for (ll i=0; i<(ll)S; i++) a[i]*=b[i]; return a; } template inline array& operator/=(array &a,const array &b){ for (ll i=0; i<(ll)S; i++) a[i]/=b[i]; return a; } template inline array& operator%=(array &a,const array &b){ for (ll i=0; i<(ll)S; i++) a[i]%=b[i]; return a; } template inline array& operator+=(array &a,R b){ for (T &e: a) e+=b; return a; } template inline array& operator-=(array &a,R b){ for (T &e: a) e-=b; return a; } template inline array& operator*=(array &a,R b){ for (T &e: a) e*=b; return a; } template inline array& operator/=(array &a,R b){ for (T &e: a) e/=b; return a; } template inline array& operator%=(array &a,R b){ for (T &e: a) e%=b; return a; } template inline array operator+(const array &a,R b){ array c=a; return c+=b; } template inline array operator-(const array &a,R b){ array c=a; return c-=b; } template inline array operator*(const array &a,R b){ array c=a; return c*=b; } template inline array operator/(const array &a,R b){ array c=a; return c/=b; } template inline array operator%(const array &a,R b){ array c=a; return c%=b; } template inline array operator-(R b,const array &a){ array c=-a; return c+=b; } template inline array operator-(const array &a,const array &b){ array c=a; return c-=b; } template inline array operator-(const array &a){ array c=a; return c*=(-1); } template inline ostream &operator<<(ostream &os,const array &a){ for (ll i=0; i<(ll)S; i++) os<<(i>0?" ":"")<(system_clock::now()-st).count()/1000;} } timeget; struct cinutil{ template static void cin1core(T &a){ cin>>a; } template static void cin1core(pair &a){ cin1core(a.first), cin1core(a.second); } template static void cin1core(tuple &a){ cinTplRec,sizeof...(Args)-1>()(a); } template static void cin1core(array &a){for(int i=0;i<(int)N;++i) cin>>a[i];} private: template struct cinTplRec{ void operator()(Tpl &a){ cinTplRec()(a); cin1core(get(a)); } }; template struct cinTplRec{ void operator()(Tpl &a){ cin1core(get<0>(a)); } }; }; template T cin1(){ T a; cinutil::cin1core(a); return a; } template tuple cins(){ return cin1>(); } template struct mll_{ using Int = long long; using ll = long long; ll val_=0; /*---- utility ----*/ mll_ &norm(){ return normR().normS(); }//正規化 mll_ &normR(){ val_%=MOD; return *this; }//剰余正規化のみ mll_ &normS(){ if (val_<0) val_+=MOD; return *this; }//正負正規化のみ mll_ &normP(){ if (val_>=MOD) val_-=MOD; return *this; }//加算時正規化 mll_ &invsg(){ val_=-val_; return normS(); }//正負反転 ll modinv(int a){//a^-1 mod MOD int ypre=0,y=1,apre=MOD; while (a>1){ int t=apre/a; apre-=a*t,swap(a,apre); ypre-=y*t,swap(y,ypre); } return y<0 ? y+MOD: y; } /*---- I/F ----*/ mll_(){} mll_(ll v): val_(v){ norm(); } mll_(ll v,bool b): val_(v){} //正規化無のコンストラクタ Int val()const{ return (Int)val_; } bool isnone() const { return val_==-1; } //true:値なし mll_ &none() { val_=-1; return *this; } //値なしにする mll_ &inv(){ val_=modinv((int)val_); return *this; } mll_ &operator+=(mll_ b){ val_+=b.val_; return normP(); } mll_ &operator-=(mll_ b){ val_-=b.val_; return normS(); } mll_ &operator*=(mll_ b){ val_*=b.val_; return normR(); } mll_ &operator/=(mll_ b){ return *this*=b.inv(); } mll_ &operator+=(ll b){ return *this+=mll_(b); } mll_ &operator-=(ll b){ return *this-=mll_(b); } mll_ &operator*=(ll b){ return *this*=mll_(b); } mll_ &operator/=(ll b){ return *this/=mll_(b); } mll_ &operator--(int){ return *this-=1; } mll_ &operator++(int){ return *this+=1; } mll_ operator-()const{ return mll_(*this).invsg(); } mll_ operator+(mll_ b)const{ return mll_(*this)+=b; } mll_ operator-(mll_ b)const{ return mll_(*this)-=b; } mll_ operator*(mll_ b)const{ return mll_(*this)*=b; } mll_ operator/(mll_ b)const{ return mll_(*this)/=b; } mll_ operator+(ll b)const{ return mll_(*this)+=b; } mll_ operator-(ll b)const{ return mll_(*this)-=b; } mll_ operator*(ll b)const{ return mll_(*this)*=b; } mll_ operator/(ll b)const{ return mll_(*this)/=b; } friend mll_ operator+(ll a,mll_ b){ return b+a; } friend mll_ operator-(ll a,mll_ b){ return -b+a; } friend mll_ operator*(ll a,mll_ b){ return b*a; } friend mll_ operator/(ll a,mll_ b){ return mll_(a)/b; } bool operator==(mll_ b)const{ return val_==b.val_; } bool operator!=(mll_ b)const{ return val_!=b.val_; } bool operator==(ll b)const{ return *this==mll_(b); } bool operator!=(ll b)const{ return *this!=mll_(b); } friend bool operator==(ll a,mll_ b){ return mll_(a)==b; } friend bool operator!=(ll a,mll_ b){ return mll_(a)!=b; } friend ostream &operator<<(ostream &os,mll_ a){ return os << a.val_; } friend istream &operator>>(istream &is,mll_ &a){ return is >> a.val_; } mll_ pow(ll k)const{ mll_ ret(1,false),a(*this); for (; k>0; k>>=1,a*=a) if (k&1)ret*=a; return ret; } static constexpr int mod() { return MOD; } //enum{ modll=MOD }; }; struct bll{ ll s=0; bll(ll s_=0): s(s_){} bll(int s_): s(s_){} bll(const string &bitstr): s(str2val(bitstr)){} bll(const char *bitstr): s(str2val(bitstr)){} struct ref { bll &b; const ll msk; ref(bll &b_,ll pos):b(b_),msk(1LL<>pos)&1; } bll &operator=(int b){ s=b; return *this; } bll &operator=(ll b){ s=b; return *this; } bll &operator=(const string &bitstr){ s=str2val(bitstr); return *this; } bll &operator=(const char *bitstr){ s=str2val(bitstr); return *this; } bll operator++(int){ bll b(*this); s++; return b; } bll operator--(int){ bll b(*this); s--; return b; } operator ll() const noexcept { return s; } bll &operator&=(ll b){ s&=b; return *this; } bll &operator|=(ll b){ s|=b; return *this; } bll &operator^=(ll b){ s^=b; return *this; } bll &operator+=(ll b){ s+=b; return *this; } bll &operator-=(ll b){ s-=b; return *this; } bll &operator<<=(ll i){ s<<=i; return *this; } bll &operator>>=(ll i){ s>>=i; return *this; } bll operator&(ll b)const{ return s&b; } bll operator|(ll b)const{ return s|b; } bll operator^(ll b)const{ return s^b; } bll operator+(ll b)const{ return s+b; } bll operator-(ll b)const{ return s-b; } bll operator<<(ll i)const{ return s<>(ll i)const{ return s>>i; } bll operator&(int b)const{ return s&b; } bll operator|(int b)const{ return s|b; } bll operator^(int b)const{ return s^b; } bll operator+(int b)const{ return s+b; } bll operator-(int b)const{ return s-b; } bll operator<<(int i)const{ return s<>(int i)const{ return s>>i; } bll operator~()const{ return ~s; } bll &oneq (bll msk){ s|= msk.s; return *this; } bll &offeq (bll msk){ s&=~msk.s; return *this; } bll &flipeq(bll msk){ s^= msk.s; return *this; } bll on (bll msk)const{ return bll(s).oneq (msk); } bll off (bll msk)const{ return bll(s).offeq (msk); } bll flip (bll msk)const{ return bll(s).flipeq(msk); } bool any0(bll msk)const{ return ~s&msk.s; } bool any1(bll msk)const{ return s&msk.s; } bool all0(bll msk)const{ return !any1(msk); } bool all1(bll msk)const{ return !any0(msk); } bll &oneq (ll l,ll r){ return oneq (rngmsk(l,r)); } bll &offeq (ll l,ll r){ return offeq (rngmsk(l,r)); } bll &flipeq(ll l,ll r){ return flipeq(rngmsk(l,r)); } bll on (ll l,ll r)const{ return on (rngmsk(l,r)); } bll off (ll l,ll r)const{ return off (rngmsk(l,r)); } bll flip (ll l,ll r)const{ return flip(rngmsk(l,r)); } bool any0(ll l,ll r)const{ return any0(rngmsk(l,r)); } bool any1(ll l,ll r)const{ return any1(rngmsk(l,r)); } bool all0(ll l,ll r)const{ return all0(rngmsk(l,r)); } bool all1(ll l,ll r)const{ return all1(rngmsk(l,r)); } bll &maskeq(ll l,ll r){ s&=rngmsk(l,r); return *this; } bll mask(ll l,ll r)const{ return bll(s).maskeq(l,r); } bll &oneq (ll i){ s|= (1LL<>r; } static bll rngmsk(ll l,ll r){ return (1LL<<(l+1))-(1LL<(s).count(); } ll count(bll msk)const{ return (msk&s).count(); } ll count(ll l,ll r)const{ return mask(l,r).count(); } vector idxes()const{ vector v; for(ll i=0,t=s; t; t>>=1,i++) if(t&1)v.push_back(i); return v; } string to_string(ll wd=-1)const{ wd=max({wd,msbit()+1,1LL}); string ret; for(ll i=wd-1;i>=0;--i) ret += '0'+char((s>>i)&1); return ret; } private: ll str2val(const string &bitstr){ ll val=0, len=(ll)bitstr.size(); for(ll i=0;i struct SET: set{ using P=set; typename P::iterator it=P::end(); template SET(Args...args): P(args...){} SET(initializer_list a): P(a.begin(),a.end()){} ll size() const { return (ll)P::size(); } bool insert(const T &x){ bool r; tie(it,r)=P::insert(x); return r; } template void insert(It st,It en){ P::insert(st,en); } void insert(initializer_list a){ P::insert(a.begin(),a.end()); } template bool emplace(A&&...a){ bool r; tie(it,r)=P::emplace(a...); return r; } void eraseit(){ it=P::erase(it); } void find(const T &x){ it=P::find(x); } bool contains(const T &x){ return P::count(x)==1; } void lower_bound(const T &x){ it=P::lower_bound(x); } void upper_bound(const T &x){ it=P::upper_bound(x); } bool isend() { return it==P::end(); } T getit() { return *it; } T next() { return *(++it); } T prev() { return *(--it); } bool nextok() { return !isend() && it!=--P::end(); } bool prevok() { return it!=P::begin(); } T front() { return *(it=P::begin()); } T back() { return *(it=--P::end()); } void pop_front(){ front(); eraseit(); } void pop_back(){ back(); eraseit(); } void push_front(const T &x){ it=P::insert(P::begin(),x); } void push_back (const T &x){ it=P::insert(P::end(),x); } void push_out(SET &b){ b.push_front(back()); pop_back(); } void pull_in(SET &b){ push_back(b.front()); b.pop_front(); } }; template struct cumulativesum{ using Int = long long; using ll = long long; ll n=0; vector c; cumulativesum():c(1){} template cumulativesum(S &&v): n((ll)v.size()),c(n+1) { Ini(v); } template void init(S &&v){ n=(ll)v.size(); c.resize(n+1); Ini(v); } void add(T x) { n++; c.push_back(c.back()+x); } T operator()(Int l,Int r){ return c[max(min(n,r+1),0LL)]-c[min(max(0LL,l),n)]; } pair group(T i){ ll g=upper_bound(c.begin(),c.end(),i)-c.begin()-1; T r = g>=0 ? i-c[g] : i; return {g,r}; } T mx(){//区間和max T mn=T(),samx=0; for(ll i=1;i<=n;++i){ chmax(samx,c[i]-mn); chmin(mn,c[i]); } return samx; } template void Ini(S &&v) { for(ll i=0;i cumulativesum(S) -> cumulativesum::type::value_type>; template vector powers(T m,ll n){ vector ret(n+1,1); for(ll i=1;i<=n;++i) ret[i]=ret[i-1]*m; return ret; } template auto runlength(T &&v){ vector::type::value_type,ll>> ret; for(auto&&e:v){ if(ret.empty() or ret.back().first!=e) ret.emplace_back(e,1); else ret.back().second++; } return ret; } inline vector str2num(string &s,char base,const string &etc){ vector v(s.size()); for(ll i=0;i<(ll)s.size();++i){ size_t pos=etc.find(s[i]); if(pos==etc.npos) v[i]=s[i]-(ll)base; else v[i]=-((ll)pos+1); } return v; } template struct combination{ vector f,g; ll mxN=0; combination(){} combination(ll maxN): f(maxN+1,1),g(maxN+1),mxN(maxN) { for (ll i=1;i<=mxN;++i) { f[i]=f[i-1]*i; } g[mxN]=1/f[mxN]; for (ll i=mxN;i>=1;--i) { g[i-1]=g[i]*i; } } T P(ll n,ll r){ return (n<0 || r<0 || n vector CnLnR(long long nL,long long nR,long long r,SP sp){ if (nR-nL+1<=0) return vector(); if (r<0) return vector(nR-nL+1,0); vector v=sp(nL-r+1,nR-r+1,r); for (T& e: v) e*=finv(r); return v; } template vector HrLrR(long long n,long long rL,long long rR,SP sp){//r<0不可 return CnLnR(n-1+rL,n-1+rR,n-1,sp); } }; template struct wrapVector1d{ using S=typename T::value_type; using Int = long long; const T *v; S Ini; wrapVector1d(const T &v_,S ini_=S()):v(&v_),Ini(ini_){} S operator[](Int i)const{ return (i<0 || (Int)v->size()<=i) ? Ini : (*v)[i]; } }; template struct wrapVector2d{ using S=typename T::value_type; using Int = long long; const vector *v; S Ini; T dmy; wrapVector2d(const vector &v_,S ini_=S()):v(&v_),Ini(ini_){} wrapVector1d operator[](ll i)const{ return (i<0 || (Int)v->size()<=i) ? wrapVector1d(dmy,Ini) : wrapVector1d((*v)[i],Ini); } }; namespace dumpstring{//dummy struct args{ using Int = long long; args(){} args &wd(Int wd__){ (void)wd__; return *this; } template args &rngs(array,2> rngs){ return *this; } args &tr(vector tr__){ (void)tr__; return *this; } args &tr(){ return *this; } args &labels(vector labels__){ (void)labels__; return *this; } args &xrev(){ return *this; } args &yrev(){ return *this; } args &zrev(){ return *this; } args &wrev(){ return *this; } }; template void dumpNd(const string &h,const NdT &fd,const args &p=args(),ostream &os=cerr){} }; using dumpstring::args; using dumpstring::dumpNd; #endif//テンプレートend template struct Vector: vector{ using Int = long long; using vT=vector; using cvT=const vector; using cT=const T; using vT::vT; //親クラスのコンストラクタの隠蔽を回避 using vT::begin,vT::end,vT::insert,vT::erase; auto it(Int i){ return begin()+i; } auto it(Int i)const{ return begin()+i; } Vector(cvT& b):vT(b){} Vector(vT&& b):vT(move(b)){} Vector(int n,cT& x):vT(n,x){}// ┬ 型推論のためラッパー Vector(long long n,cT& x):vT(n,x){} template Vector(const Vector& b):vT(b.begin(),b.end()){} template Vector(const vector& b):vT(b.begin(),b.end()){} Vector(Int n,T s,T d){ iota(n,s,d); } Vector(Int n,function g):vT(n){ for(Int i=0;i &b){ return *this+=(cvT&)b; } Vector &operator-=(const Vector &b){ return *this-=(cvT&)b; } Vector &operator*=(const Vector &b){ return *this*=(cvT&)b; } Vector &operator/=(const Vector &b){ return *this/=(cvT&)b; } Vector &operator%=(const Vector &b){ return *this%=(cvT&)b; } Vector operator+(cvT &b){ return Vector(*this)+=b; } Vector operator-(cvT &b){ return Vector(*this)-=b; } Vector operator*(cvT &b){ return Vector(*this)*=b; } Vector operator/(cvT &b){ return Vector(*this)/=b; } Vector operator%(cvT &b){ return Vector(*this)%=b; } Vector operator+(const Vector &b){ return Vector(*this)+=b; } Vector operator-(const Vector &b){ return Vector(*this)-=b; } Vector operator*(const Vector &b){ return Vector(*this)*=b; } Vector operator/(const Vector &b){ return Vector(*this)/=b; } Vector operator%(const Vector &b){ return Vector(*this)%=b; } template Vector &operator+=(S x){ for(T &e: *this) e+=x; return *this; } template Vector &operator-=(S x){ for(T &e: *this) e-=x; return *this; } template Vector &operator*=(S x){ for(T &e: *this) e*=x; return *this; } template Vector &operator/=(S x){ for(T &e: *this) e/=x; return *this; } template Vector &operator%=(S x){ for(T &e: *this) e%=x; return *this; } template Vector operator+(S x)const{ return Vector(*this)+=x; } template Vector operator-(S x)const{ return Vector(*this)-=x; } template Vector operator*(S x)const{ return Vector(*this)*=x; } template Vector operator/(S x)const{ return Vector(*this)/=x; } template Vector operator%(S x)const{ return Vector(*this)%=x; } Vector &operator--(int){ return *this-=T(1); } Vector &operator++(int){ return *this+=T(1); } Vector operator-()const{ return Vector(*this)*=-1; } template friend Vector operator-(S x,const Vector &a){ return -a+=x; } Vector slice(Int l,Int r,Int d=1)const{ Vector ret; for(Int i=l;(d>0&&i<=r)||(d<0&&r<=i);i+=d) ret.push_back((*this)[i]); return ret; } Int size()const{ return (Int)vT::size(); } Vector &push_back(cT& x,Int n=1){ for(Int i=0;iinsert(0,x,n); return *this; } Vector &pop_front(Int n=1){ erase(0,n-1); return *this; } T pull_back(){ T x=move(vT::back()); vT::pop_back(); return x; } T pull_front(){ T x=move(vT::front()); erase(0); return x; } Vector &insert(Int i,cT& x,Int n=1){ insert(it(i),n,x); return *this; } Vector &insert(Int i,cvT& b){ insert(it(i),b.begin(),b.end()); return *this; } Vector &erase(Int i){ erase(it(i)); return *this; } Vector &erase(Int l,Int r){ erase(it(l),it(r+1)); return *this; } Vector &concat(cvT &b,Int n=1){ cvT B = (&b==this) ? *this : vT{}; for(int i=0;iinsert(size(),(&b==this)?B:b); return *this; } Vector repeat(Int n){ return Vector{}.concat(*this,n); } Vector &reverse(Int l=0,Int r=-1){ r+=r<0?size():0; std::reverse(it(l),it(r+1)); return *this; } Vector &rotate(Int m){ return rotate(0,size()-1,m); } Vector &rotate(Int l,Int r,Int m){ std::rotate(it(l),it(m),it(r+1)); return *this; } Vector &sort(Int l=0,Int r=-1){ r+=r<0?size():0; std::sort(it(l),it(r+1)); return *this; } Vector &rsort(Int l=0,Int r=-1){ return sort(l,r).reverse(l,r); } template Vector &sort(Pr pr){ return sort(0,size()-1,pr); } template Vector &sort(Int l,Int r,Pr pr){ std::sort(it(l),it(r+1),pr); return *this; } Vector &uniq(){ erase(unique(begin(),end()),end()); return *this; } Vector &sortq(){ return sort().uniq(); } Vector &fill(cT& x){ return fill(0,size()-1,x); } Vector &fill(Int l,Int r,cT& x){ std::fill(it(l),it(r+1),x); return *this; } template Vector &iota(Int n,T s=0,S d=1){ vT::resize(n); if(n==0) return *this; (*this)[0]=s; for(int i=1;i Int countif(Pr pr)const{ return countif(0,size()-1,pr); } template Int countif(Int l,Int r,Pr pr)const{ return Int(count_if(it(l),it(r+1),pr)); } Int find(cT& x)const{ return find(0,size()-1,x); } Int find(Int l,Int r,cT& x)const{ return Int(std::find(it(l),it(r+1),x)-begin()); } template Int findif(Pr pr)const{ return findif(0,size()-1,pr); } template Int findif(Int l,Int r,Pr pr)const{ return Int(find_if(it(l),it(r+1),pr)-begin()); } Vector findall(cT& x)const{ return findall(0,size()-1,x); } Vector findall(Int l,Int r,cT& x)const{ return findallif(l,r,[&](cT& y){return y==x;}); } template Vector findallif(Pr pr)const{ return findallif(0,size()-1,pr); } template Vector findallif(Int l,Int r,Pr pr)const{ Vector ret; for(Int i=l;i<=r;++i) if(pr((*this)[i])) ret.push_back(i); return ret; } Int flooridx(cT& x)const{ return Int(upper_bound(begin(),end(),x)-begin()-1); } Int ceilidx(cT& x)const{ return Int(lower_bound(begin(),end(),x)-begin()); } Int leftnmof(cT& x)const{ return flooridx(x)+1; } Int rightnmof(cT& x)const{ return size()-ceilidx(x); } bool contains(cT& x)const{ Int i=flooridx(x); return i>=0 && (*this)[i]==x; } template Int flooridx(cT& x,Pr pr)const{ return Int(upper_bound(begin(),end(),x,pr)-begin()-1); } template Int ceilidx(cT& x,Pr pr)const{ return Int(lower_bound(begin(),end(),x,pr)-begin()); } template Int leftnmof(cT& x,Pr pr)const{ return flooridx(x,pr)+1; } template Int rightnmof(cT& x,Pr pr)const{ return size()-ceilidx(x,pr); } template bool contains(cT& x,Pr pr)const{ Int i=flooridx(x,pr); return i>=0 && (*this)[i]==x; } template using VV = Vector>; template using sVV = vector>; template using VVV = Vector>; template using sVVV = vector>; template using VVVV = Vector>; template using sVVVV = vector>; template using VVVVV = Vector>; template using sVVVVV = vector>; auto tostd()const{ return tov(*this); } template static vector tov(const Vector&v){ return v; } template static sVV tov(const VV &v){ sVV ret; for(auto&& e:v) ret.push_back(e); return ret; } template static sVVV tov(const VVV &v){ sVVV ret; for(auto&& e:v) ret.push_back(e.tostd()); return ret; } template static sVVVV tov(const VVVV &v){ sVVVV ret; for(auto&& e:v) ret.push_back(e.tostd()); return ret; } template static sVVVVV tov(const VVVVV &v){ sVVVVV ret; for(auto&& e:v) ret.push_back(e.tostd()); return ret; } }; /* vll a={9,8,7},b={1,2,3}; vpll p={{5,3},{7,8},{0,2},}; - -------- 操作系 -------- a+=x a-=x a*=x a/=x a%=x a+x a-x a*x a/x a%x -a x-a a++ a-- //∀i a[i]にxを演算 a+=b a-=b a*=b a/=b a%=b a+b a-b a*b a/b a%b //要素毎演算(同サイズ時) a.push_front(x,n); //n個先頭追加 省略時1 a.push_back(x,n); //n個末尾追加 省略時1 a.pop_front(n); //n個先頭削除 省略時1 a.pop_back(n); //n個末尾削除 省略時1 ll x=a.pull_front(); //pop_front()と同時に値取得 ll x=a.pull_back(); //pop_back()と同時に値取得 a.insert(i,x,n); //a[i]にn個x挿入 n省略時1 a.insert(i,b); //a[i]にvll b挿入 a.erase(i); //a[i]削除 a.erase(l,r); //区間[l,r]削除 a.concat(b); //aにbを結合 b=a可 a.concat(b,n); //aにbをn回結合 b=a可 a.reverse(l,r); //[l,r]を反転 l,r省略可 a.rotate(m); //a[m]を先頭にするrotate a.rotate(l,r,m); //a[m]を先頭にするrotate 範囲[l,r] a.sort(l,r); //[l,r]をソート l,r省略可 a.rsort(l,r); //[l,r]を逆順ソート l,r省略可 p.sort(l,r,[&](pll x,pll y){return x.second0; }; //検索条件 ll m=a.count(x); //xの個数 ll m=a.count(l,r,x); //xの個数in[l,r] ll m=a.countif(pr); //条件満たす個数 ll m=a.countif(l,r,pr); //条件満たす個数in[l,r] ll i=a.find(x); //xの最左位置i ない時N(配列長) ll i=a.find(l,r,x); //xの最左位置i in[l,r] ない時r+1 ll i=a.findif(pr); //条件満たす最左位置i ない時N(配列長) ll i=a.findif(l,r,pr); //条件満たす最左位置i in[l,r] ない時r+1 vll is=a.findall(x); //xの位置i列挙 vll is=a.findall(l,r,x); //xの位置i列挙in[l,r] vll is=a.findallif(pr); //条件満たす位置i列挙 vll is=a.findallif(l,r,pr); //条件満たす位置i列挙in[l,r] - -------- 昇順sort済み配列用 -------- ll i=a.flooridx(x); //x以下の最近傍位置i ない時-1 ll i=a.ceilidx(x); //x以上の最近傍位置i ない時N(配列長) ll m=a.leftnmof(x); //x以下の個数 ll m=a.rightnmof(x); //x以上の個数 bool b=a.contains(x); //xを含む - -------- 比較関数prでsort済みの配列用 -------- auto pr=[&](auto &x,auto &y){ return x>y; }; //降順ソート時 ll i=a.flooridx(x,pr); //x以左の最近傍位置i ない時-1 ll i=a.ceilidx(x,pr); //x以右の最近傍位置i ない時N(配列長) ll m=a.leftnmof(x,pr); //x以左の個数 ll m=a.rightnmof(x,pr); //x以右の個数 bool b=a.contains(x,pr); //xを含む a.concat(b,n).pop_back().rsort().uniq(); //連続適用できる auto aa=a.tostd(); //N次元VectorをN次元vectorに変換(N≦5) */ template struct wrapv: Vector{ using Int = long long; T def=T(); T defIF=T(); wrapv(const Vector &b):Vector(b){} wrapv(Vector &&b):Vector(move(b)){} wrapv(const std::vector &b):Vector(b){} wrapv(std::vector &&b):Vector(move(b)){} T &operator[](Int i){ return (i<0 || this->size()<=i) ? (defIF=def) : Vector::operator[](i); } void setdef(const T& x){ def=x; } }; /* wrapv v=vll(N,0,1); //vllなどでコンストラクトしてから代入する v.setdef(INF); //範囲外での値セット */ #if 0 #define MODLL (1000000007LL) #else #define MODLL (998244353LL) #endif using mll = mll_; //using mll = fraction; // 1 //0┼2 // 3 左 上 右 下 vector dxys={{0,-1},{-1,0},{0,1},{1,0},}; namespace fpsspace{ using Int = long long; using ll = long long; constexpr int inf=int(1e9); /********* utility関数 *********/ template T POW(T a,ll n){//a^n n負も可 if(n<0) a=T(1)/a,n=-n; T r=1; for(; n>0; n>>=1,a*=a) if(n&1)r*=a; return r; } ll LimitMul(ll a,ll b,ll l=ll(9e18)){//min(a*b,l) a,b≧0 return (b==0 || a<=l/b) ? a*b : l; } /*---- 1/i列挙 i=1~d ----*/ template struct Wrap{};//オーバロード解決用にKindを型に変換 template> vector &Invs(int d,Wrap){//Kind=1 or 2(modint系)の時 static vector invs(2,T(1)); int MOD = T::mod(); for(int i=(int)invs.size();i<=d;++i) invs.push_back(-invs[MOD%i]*T(MOD/i)); return invs; } template vector &Invs(int d,Wrap<0>){//その他の時 static vector invs(1); for(int i=(int)invs.size();i<=d;++i) invs.push_back(T(1)/i); return invs; } template vector &Fact(int d){// i!列挙 i=0~d static vector fact(1,T(1)); for(int i=(int)fact.size();i<=d;++i) fact.push_back(fact.back()*T(i)); return fact; } template vector &FInv(int d){// 1/i!列挙 i=0~d static vector finv(1,T(1)); const vector &invs=Invs(d,Wrap{}); for(int i=(int)finv.size();i<=d;++i) finv.push_back(finv.back()*invs[i]); return finv; } // Berlekamp Massey法 2L-1次までのA(x)からA=P/QのQをL次で復元 Kind=1,2のみ template vector BerlekampMassey(const vector &a){ vector C={1},B={1};//C:求める数列、B:1つ前のCの状態を保存 int m=1; //ポインタ?っぽいもの T b=T(1); //前回のdの値 auto C_update=[](vector &C,T d,T b,vector &B,int m){ T d_b=d/b; int M=(int)B.size(); if((int)C.size() tmp=C; C_update(C,d,b,B,m); //C -= d/b * (Bをmだけ右シフトしたもの) B.swap(tmp); b=d; m=0; } else C_update(C,d,b,B,m); //C -= d/b * (Bをmだけ右シフトしたもの) } m++; } return C; } template FPS de_sparse( //a*F'=b*Fを満たすF const SPFPS &a_,const SPFPS &b_,S f0,Int dmx_,const vector &invs_=vector()) { assert(a_.lowdeg()<=b_.lowdeg()); int dmx=(int)dmx_; const vector &invs = invs_.size() ? invs_ : Invs(dmx,Wrap{}); SPFPS a=a_.shift(-a_.lowdeg()),b=b_.shift(-a_.lowdeg()); T a0inv=T(1)/a.co(0); a*=a0inv,b*=a0inv; a.erase(a.begin()); FPS f({T(f0)},dmx); for(int d=1;d<=dmx;++d){ for(auto [bb,i]:b){ if(d-1-i>=0) f.at(d)+=bb*f[d-1-i]; } for(auto [aa,i]:a){ if(d-i>=0) f.at(d)-=aa*f[d-i]*(d-i); } f.at(d)*=invs[d]; } return f; } /********* 疎FPSクラス *********/ template struct sparseFps: vector>{ using vector>::vector; //親クラスのコンストラクタの隠蔽を回避 sparseFps &Norm(){//d昇順、同一dのco加算、co=0を削除 sort(this->begin(),this->end(), [](const auto &x,const auto &y){return x.secondsize();++i){ if(j>=0 && deg(j)==deg(i)){ co(j)+=co(i); } else{ if(!(j>=0 && co(j)==T(0))) ++j; (*this)[j]=(*this)[i]; } } if(j>=0 && co(j)==T(0)) --j; this->resize(j+1); return *this; } /*---- I/F ----*/ template void set(S co,R deg){ this->emplace_back(T(co),Int(deg)); } Int deg()const{ return this->empty() ? -1 : this->back().second; }//最高次数 T co(Int i)const{ return (*this)[i].first; }//(*this)[i]の係数 T &co(Int i) { return (*this)[i].first; } Int deg(Int i)const{ return (*this)[i].second; }//(*this)[i]の次数 Int °(Int i) { return (*this)[i].second; } Int lowdeg()const{ return this->empty() ? inf : this->front().second; } sparseFps &operator+=(const sparseFps &sg){ this->insert(this->end(),sg.begin(),sg.end()); return Norm(); } sparseFps operator+(const sparseFps &sg)const{ return sparseFps(*this)+=sg; } sparseFps &operator*=(T b){ for(auto&&[c,_]:*this) c*=b; return *this; } sparseFps operator*(T b)const{ return sparseFps(*this)*=b; } sparseFps &operator*=(const sparseFps &sg){ return *this=*this*sg; } sparseFps operator*(const sparseFps &sg)const{ sparseFps ret; for(auto&&[cf,df]:*this) for(auto&&[cg,dg]:sg) ret.set(cf*cg,df+dg); return ret.Norm(); } sparseFps shift(Int k)const{ // *x^k sparseFps ret; for(auto&&[co,d]:*this) if(d+k>=0) ret.set(co,d+k); return ret; } sparseFps diff()const{ sparseFps ret; for(auto&&[co,d]:*this) if(d>0) ret.set(co*d,d-1); return ret; } template FPS exp(Int dmx)const{ assert(lowdeg()!=0); //定数項=0必須 return de_sparse(sparseFps{{1,0},},diff(),1,dmx); } template FPS pow(ll k,Int dmx,const vector &invs_=vector())const{ assert(!(k<0 && lowdeg()>0));//k負なら定数項必須 if(k==0) return FPS({1},dmx); //-- 計算後最高次数d:k<0ならdmx、k>0ならmin(dmx,deg()*k)まで int d = (k<0 || LimitMul(deg(),k)>(ll)dmx) ? int(dmx) : int(deg()*k); //-- invs[i]=1/iをi=1~dまで計算(計算済み分は再利用、足りない分だけ計算) const vector &invs = invs_.size() ? invs_ : Invs(d,Wrap{}); //-- 最低次数関連処理 int s=(int)lowdeg();//計算前最低次数 if(k>0 && LimitMul(s,k)>(ll)dmx) return FPS(dmx);//計算後all0の時 //-- 漸化式で計算 T f0inv=T(1)/co(0); FPS g({POW(co(0),k)},dmx); for(int i=1;i<=d-s*k;++i){ //k負の時必ずs=0なのでOK for(int j=1;j<(int)this->size();++j){ auto [c,dg]=(*this)[j]; int b=int(dg)-s; if(i-b<0)break; g.at(i)+=c*g.at(i-b)*(T(k)*b-i+b); } g.at(i)*=f0inv*invs[i]; } return g.shift(Int(s*k)); } }; /********* FPSクラス *********/ template< class T, //係数の型 int Kind //係数の種類 0:その他、1:NTTfriendly mod、2:任意mod > struct Fps: vector{ static_assert(0<=Kind && Kind<=3); static constexpr int kind=Kind; int dMx=int(1e6); //次数上限(x^dMxより上は保持しない) using vT = vector; /*---- utility ----*/ int isize()const{ return (int)vector::size(); } int NormSize()const{//leading zeroを除いたサイズ const用 int sv=isize(); while(sv>0 && (*this)[sv-1]==T(0)) --sv; return sv; } int Deg()const{ return NormSize()-1; } //最高次数 const用 Fps &Cut(){ return cut(dMx); } Fps &ZeroExtend(){ int anm=max(0,dMx-isize()+1); vT::insert(vT::end(),anm,T(0)); return *this; } int MinD(const Fps &g)const{ return min(dMx,g.dMx); } void MergeD(const Fps &g){ dMx=MinD(g); Cut(); } template Fps &Add(const Fps &g){ MergeD(g); for(int i=min(dMx,g.Deg());i>=0;--i) at(i)+=Sign*g[i]; return *this; } Fps ProdSparse(const sparseFps &g,int d)const{//f*疎g mod x^(d+1) Fps ret(d); for(auto&&[co,dg]:g) for(int i=0;i<(int)isize();++i){ if(dg+i>d) break; ret.at(dg+i)+=co*(*this)[i]; } return ret; } Fps InvSparse(const sparseFps &g,int d)const{//f/疎g mod x^(d+1) g0≠0 assert(!g.empty() && g.deg(0)==0 && g.co(0)!=0); //-- g定数項を1にする T c0inv=T(1)/g.co(0); Fps ret=((*this)*c0inv).setdmx(d); if(g.size()==1u) return ret; sparseFps gg=g*c0inv; //-- 配るDP計算 for(int i=0; i+(int)gg.deg(1)<=d; ++i){ for(int j=1; j<(int)gg.size(); ++j){ auto [co,dg]=gg[j]; int ii=i+(int)dg; if(d &g,ll k,const vector &invs_=vector()) { assert(g.size()==2U && g.co(0)==T(1) && g.deg(0)==0); const vector &invs = invs_.size() ? invs_ : Invs(dMx,Wrap{}); int b=(int)g.deg(1); T c=g.co(1)*k; for(int i=1;i*b<=dMx;++i,c*=-g.co(1)) at(i*b)+=c*invs[i]; return *this; } /*---- コンストラクタ ----*/ explicit Fps(Int dmx=int(1e6)): dMx(int(dmx)){} Fps(initializer_list i,Int dmx=int(1e6)): vT(i.begin(),i.end()),dMx(int(dmx)){ Cut(); } template ::iterator_category> Fps(It l,It r,Int dmx=int(1e6)): vT(l,r),dMx(int(dmx)){ Cut(); } Fps(vector &&v,Int dmx=int(1e6)): vT(move(v)),dMx(int(dmx)){} Fps(const sparseFps &sf,Int dmx=int(1e6)):dMx(int(dmx)){ //疎f → f for(auto&&[co,deg]:sf) if(deg<=dmx) at(deg)=co; } /*---- I/F ----*/ sparseFps tosparse()const{ //f → 疎f sparseFps ret; for(int i=0;i::size(); } Int deg(){ fit(); return size()-1; } Int lowdeg()const{ for(int i=0;iresize(i+1); return (*this)[i]; } Fps &fit(){ this->resize(NormSize()); return *this; } Fps &operator+=(const Fps &g){ return Add<1>(g); } Fps &operator-=(const Fps &g){ return Add<-1>(g); } Fps &operator*=(const Fps &g){ return *this=*this*g; } Fps &operator/=(const Fps &g){ return *this=*this/g; } Fps &operator*=(const sparseFps &g){ return *this=*this*g; } Fps &operator/=(const sparseFps &g){ return *this=*this/g; } Fps &operator+=(T c){ at(0)+=c; return *this; } Fps &operator-=(T c){ at(0)-=c; return *this; } Fps &operator*=(T c){ for(auto&& e: *this) e*=c; return *this; } Fps &operator/=(T c){ return (*this)*=T(1)/c; } Fps operator+(const Fps &g)const{ return Fps(*this)+=g; } Fps operator-(const Fps &g)const{ return Fps(*this)-=g; } Fps operator*(const Fps &g)const{ return Prod(*this,g,MinD(g)); } Fps operator/(const Fps &g)const{ return InvSparse(g.tosparse(),MinD(g)); } Fps operator*(const sparseFps &g)const{ return ProdSparse(g,dMx); } Fps operator/(const sparseFps &g)const{ return InvSparse(g,dMx); } Fps operator+(T c)const{ return Fps(*this)+=c; } Fps operator-(T c)const{ return Fps(*this)-=c; } Fps operator*(T c)const{ return Fps(*this)*=c; } Fps operator/(T c)const{ return Fps(*this)/=c; } Fps operator-()const{ return Fps(*this)*=T(-1); } friend Fps operator+(T c,const Fps &f){ return f+c; } friend Fps operator-(T c,const Fps &f){ return -f+c; } friend Fps operator*(T c,const Fps &f){ return f*c; } T prod1(const Fps &g,Int k_)const{ //[x^k]f*g int df=Deg(),dg=g.Deg(),k=(int)k_; if(MinD(g)=0; ++i,--j) ret+=(*this)[i]*g[j]; return ret; } T bostanmori(const Fps &g,ll k)const{ //[x^k]f/g assert(g.at(0)!=0); Fps P=Fps(*this).setdmx(inf),Q=Fps(g).setdmx(inf); for(; k>0; k>>=1){ Fps Q1=Q; for(int i=1;i f; for(int i=0;i<=d;++i) f.push_back(at(i)); vector Q=BerlekampMassey(f); Int dmx=Int(Q.size()-1); return Fps(move(Q),dmx); } T nthterm(Int d,ll k)const{ //[x^k]f 線形漸化式を仮定しx^d(d奇数)までから推定 Fps Q=berlekamp_massey(d); Fps P=Prod(*this,Q,Q.dMx-1).fit(); return P.bostanmori(Q,k); } Fps &estimate(Int d,Int dmx=-1){ //dmx次まで推定 線形漸化式を仮定しx^d(d奇数)までから推定 if(dmx==-1) dmx=dMx; Fps Q=berlekamp_massey(d); Fps P=Prod(*this,Q,Q.dMx-1).fit().setdmx(dmx); return *this=(Q.setdmx(dmx).inv()*P).ZeroExtend(); } Fps &cut(Int d){ //x^dまでにする if(d+1=max(0,-k);--i) ret.at(i+k)=(*this)[i]; return ret; } T eval(T x)const{ //f(c) T ret=T(0); for(int i=isize()-1;i>=0;--i) ret*=x,ret+=(*this)[i]; return ret; } Fps diff()const{ //微分 Fps ret(dMx-1); for(int i=Deg();i>=1;--i) ret.at(i-1)=(*this)[i]*i; return ret; } Fps integ()const{ //積分 Fps ret(dMx+1); for(int i=min(Deg(),dMx); i>=0; --i) ret.at(i+1)=(*this)[i]/(i+1); return ret; } T integrange(T l,T r)const{ //定積分 ∫_l^r f dx Fps itg=integ(); return itg.eval(r)-itg.eval(l); } Fps inv()const{ assert(at(0)!=0);//定数項≠0 Fps g{T(1)/at(0)}; for(int i=1;iint(dMx/k)) return Fps(dMx);//f(x)=0か結果=0の時 int m=int(dMx+1-z*k); //最終は先頭にゼロがz*k個→計算はdMx+1-z*k項でok Fps g=shift(-z).setdmx(m-1)/at(z); //定数項1にする変換 Fps gk=(g.log()*k).exp(); //g^k Fps ret=(gk*POW(at(z),k)).setdmx(dMx).shift(Int(z*k)); //変換を戻す return ret; } Fps powdbl(ll k)const{ //f^k Fps ret({1},dMx),g=*this; for(; k>0; k>>=1,g*=g) if(k&1)ret*=g; return ret; } Fps powsparse(ll k,const vector &invs=vector())const{ //疎f^k return tosparse().template pow(k,dMx,invs); } pair div(const Fps &g)const{ //多項式f/g,f%g const Fps &f=*this; int na=f.NormSize(),nb=g.NormSize(); assert(nb>0); int n=na-nb+1;//商の項数 if(n<=0) return {Fps(dMx),f}; int nu=f.isize(),nv=g.isize(); Fps aR(f.rbegin()+nu-na,f.rbegin()+min(nu-na+n,nu),n-1); Fps bR(g.rbegin()+nv-nb,g.rbegin()+min(nv-nb+n,nv),n-1); Fps qR=bR.inv()*aR; qR.resize(n); reverse(qR.begin(),qR.end()); qR.fit().setdmx(dMx); Fps r=(f-Prod(qR,g,dMx)).fit(); return {move(qR),move(r)}; } }; /********* 積をNTTmod畳み込み、任意mod畳み込み、畳み込み不使用から選択 *********/ template //f*g mod x^(d+1) 畳み込み不使用 Fps Prod(const Fps &f,const Fps &g,int d){ return f.ProdSparse(g.tosparse(),d); } template //f*g mod x^(d+1) NTTmod畳み込み Fps Prod(const Fps &f,const Fps &g,int d){ int nf=min(d+1,f.NormSize()),ng=min(d+1,g.NormSize()); vector ff,gg; ff.reserve(nf),gg.reserve(ng); for(int i=0;i hh=convolution(ff,gg); if((int)hh.size()>d+1) hh.resize(d+1); return Fps(hh.begin(),hh.end(),d); } template //f*g mod x^(d+1) 任意mod畳み込み Fps Prod(const Fps &f,const Fps &g,int d){ static constexpr int m0 = 167772161; //m0 ff,gg; ff.reserve(nf),gg.reserve(ng); for(int i=0;i h0=convolution(ff,gg); vector h1=convolution(ff,gg); vector h2=convolution(ff,gg); Fps ret(d); int nn=min(d+1,(int)h0.size()); ret.reserve(nn); for(int i=0;i Fps Prod(const Fps &f,const Fps &g,int d){ vector ff(f.begin(),f.end()),gg(g.begin(),g.end()); vector hh = ArbitraryModConvolution::CooleyTukey::multiply(ff,gg); if((int)hh.size()>d+1) hh.resize(d+1); return Fps(hh.begin(),hh.end(),d); } #endif /********* I/F関数 *********/ template FPS prodtwopow(//f^k*g^m sparseFps f_,ll k,sparseFps g_,ll m,Int dmx, const vector &invs=vector()) { if(k==0) f_={{T(1),0},},k=1; if(m==0) g_={{T(1),0},},m=1; Int fz=f_.lowdeg(),gz=g_.lowdeg(); assert(!(fz==Int(1e9) && k<0) && !(gz==Int(1e9) && m<0));//f=0かつk>0はNG if(fz==Int(1e9) || gz==Int(1e9)) return FPS(dmx);//f=0なら結果=0 ll z=fz*k+gz*m; //k,m巨大時のoverflowは未対応とする assert(z>=0); if(ll(dmx) f=f_.shift(-fz),g=g_.shift(-gz); Int dmx2=dmx-z; sparseFps a=f*g,b=f.diff()*g*k+f*g.diff()*m; T h0=POW(f.co(0),k)*POW(g.co(0),m); FPS h=de_sparse(a,b,h0,dmx2,invs); return h.setdmx(dmx).shift(Int(z)); } }//namespace fpsspace #if 0 using fpsT = dd; using fps = fpsspace::Fps; //0:畳み込み不使用 #elif 1 using fpsT = mll; using fps = fpsspace::Fps; //1:NTTfriendly mod #elif 0 using fpsT = atcoder::modint; using fps = fpsspace::Fps; //2:任意mod #elif 0 using fpsT = dd; using fps = fpsspace::Fps; //3:FFT #endif using spfps = fpsspace::sparseFps; /* - 各種演算の結果の次数上限は、一部例外を除きf,gの小さい方となる。 - 疎FPSクラスは次数昇順、係数≠0必須 - -------- コンストラクタ -------- fps f; //f(x)=0 次数上限1e6 fps f(d); // 〃 〃 d fps f{2,3,4,}; //f(x)=2+3x+4x^2 次数上限1e6 fps f({2,3,4,},d); // 〃 〃 d fps f(all(v)); //vll等のvをコピー 次数上限1e6 fps f(all(v),d); // 〃 〃 d - -------- コンストラクタ疎版 -------- vectorと同じ spfps sf={{4,2},{-1,5}}; //f(x)=4x^2-x^5 sf.set(c,d); //c*x^dを末尾に追加 - -------- 演算子(fps同士) -------- f+=g f-=g f+g f-g -f 疎f+=疎g 疎f*=疎g 疎f+疎g 疎f*疎g f*=g f*g //NTTmod,任意mod,愚直がテンプレートで切り替わる f*=疎g f*疎g //愚直 f/=g f/=疎g f/g f/疎g //漸化式で愚直 g定数項≠0 - -------- 演算子(定数) -------- f+=c f-=c f*=c f/=c f+c f-c f*c f/c 疎f*=c 疎f*c - -------- アクセス・操作 -------- f[i]=val; //直接操作 f.at(i)=val; //自動サイズ調整有 ll n=f.size(); //項数(次数+1) leading zero含む ll d=f.deg(); //非0の最高次の次数 f(x)=0の時-1 ll d=f.lowdeg(); //非0の最低次の次数 f(x)=0の時1e9 f.setdmx(d); //次数上限をx^dにセット & mod x^(d+1) d≧0 f.fit(); //最高次≠0になるよう縮める fps f(sf); //疎f→f 変換 fps f(sf,d); //疎f→f 変換 次数上限d spfps sf=f.tosparse(); //f→疎f 変換 - -------- 演算 -------- mll c=f.prod1(g,k); //[x^k]f*g mll c=f.bostanmori(g,k);//[x^k]f/g g定数項≠0 k巨大(10^18)でもOK f.cut(d); //x^dまでにする f.mod(n); //mod x^n fps g=f.shift(k); //f*x^k k負も可 spfps sg=sf.shift(k); //疎f*x^k k負も可 mll val=f.eval(c); //f(c) fps g=f.diff(); //微分 fps g=f.integ(); //積分 mll val=f.integrange(l,r); //定積分 ∫_l^r f dx fps g=f.inv(); //1/f 定数項≠0 fps g=f.log(); //log f 定数項=1 fps g=f.exp(); //exp f 定数項=0 fps g=sf.exp(d); //exp 疎f 定数項=0 fps g=f.pow(k); //f^k k負は未対応 fps g=f.powdbl(k); //f^k doubling版 fps g=sf.pow(k,d); //疎f^k 次数上限d k負も可(定数項≠0必須) fps g=f.powsparse(k); //疎f^k k負も可(定数項≠0必須) auto[h,r]=f.div(g); //多項式の除算・剰余 h=f/g,r=f%g 次数上限はfの方 fps Q=f.berlekamp_massey(); //f=P/QのQを復元 fは2d-1次、Qはd次 Qのdmx=d mll c=f.nthterm(k); //[x^k]f 線形漸化式を仮定 k巨大(10^18)でもOK f.estimate(); //次数上限まで推定 線形漸化式を仮定 f.estimate(d); //d次まで推定 線形漸化式を仮定 fps F=fpsspace::de_sparse(sf,sg,F0,d); //微分方程式 疎f*F'=疎g*F 次数上限d fps h=fpsspace::prodtwopow(sf,k,sg,m,d); //疎f^k*疎g^m 次数上限d k,m負も可 */ namespace SolvingSpace{ template using vector = Vector; using vll=vector< ll>; using vmll=vector< mll>; using vdd=vector< dd>; using vvll=vector< vll>; using vvmll=vector< vmll>; using vvdd=vector< vdd>; using vvvll=vector< vvll>; using vvvmll=vector< vvmll>; using vvvdd=vector< vvdd>; using vvvvll=vector; using vvvvmll=vector; using vvvvdd=vector; using vpll=vector< pll>; using vtll=vector< tll>; using vqll=vector< qll>; using vvpll=vector< vpll>; using vvtll=vector< vtll>; using vvqll=vector< vqll>; using vll2=vector< ll2>; using vll3=vector< ll3>; using vll4=vector< ll4>; using vvll2=vector< vll2>; using vvll3=vector< vll3>; using vvll4=vector< vll4>; using vvvll2=vector; using vvvll3=vector< vvll3>; using vvvll4=vector; using vss=vector; template vector cinv(ll nm){ return vector(nm,[](ll i){ (void)i; return cin1(); }); } template vector> cinvv(ll H,ll W){ return vector>(H,[&](ll i){ (void)i; return cinv(W); }); } void cin2solve() { auto [N,K]=cins(); auto A=cinv(N); combination cmb(K+10); ;/* mll v=cmb(n,r); // nCr 負も可、n> t; rep(i,0,t-1){ SolvingSpace::cin2solve(); //SolvingSpace::generand(); } #endif cerr << timeget() <<"ms"<< '\n'; return 0; }