結果
問題 | No.2952 Invision of Multiples |
ユーザー | t9unkubj |
提出日時 | 2024-09-13 21:32:01 |
言語 | C++23 (gcc 12.3.0 + boost 1.83.0) |
結果 |
AC
|
実行時間 | 2,427 ms / 4,000 ms |
コード長 | 11,401 bytes |
コンパイル時間 | 4,040 ms |
コンパイル使用メモリ | 275,308 KB |
実行使用メモリ | 192,328 KB |
最終ジャッジ日時 | 2024-09-13 21:33:31 |
合計ジャッジ時間 | 77,483 ms |
ジャッジサーバーID (参考情報) |
judge5 / judge1 |
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テストケース
テストケース表示入力 | 結果 | 実行時間 実行使用メモリ |
---|---|---|
testcase_00 | AC | 782 ms
191,816 KB |
testcase_01 | AC | 753 ms
191,816 KB |
testcase_02 | AC | 1,400 ms
191,816 KB |
testcase_03 | AC | 772 ms
191,744 KB |
testcase_04 | AC | 795 ms
191,816 KB |
testcase_05 | AC | 766 ms
191,692 KB |
testcase_06 | AC | 762 ms
191,816 KB |
testcase_07 | AC | 785 ms
191,820 KB |
testcase_08 | AC | 773 ms
191,820 KB |
testcase_09 | AC | 1,659 ms
192,000 KB |
testcase_10 | AC | 1,723 ms
192,072 KB |
testcase_11 | AC | 1,470 ms
192,068 KB |
testcase_12 | AC | 1,446 ms
192,076 KB |
testcase_13 | AC | 1,441 ms
192,072 KB |
testcase_14 | AC | 1,772 ms
192,128 KB |
testcase_15 | AC | 2,427 ms
192,128 KB |
testcase_16 | AC | 2,198 ms
192,328 KB |
testcase_17 | AC | 2,061 ms
192,196 KB |
testcase_18 | AC | 2,105 ms
192,204 KB |
testcase_19 | AC | 1,696 ms
192,196 KB |
testcase_20 | AC | 1,719 ms
192,204 KB |
testcase_21 | AC | 1,672 ms
192,076 KB |
testcase_22 | AC | 1,675 ms
192,076 KB |
testcase_23 | AC | 1,686 ms
192,256 KB |
testcase_24 | AC | 1,688 ms
192,076 KB |
testcase_25 | AC | 1,706 ms
192,196 KB |
testcase_26 | AC | 1,688 ms
192,256 KB |
testcase_27 | AC | 2,324 ms
192,072 KB |
testcase_28 | AC | 2,279 ms
192,204 KB |
testcase_29 | AC | 2,292 ms
192,256 KB |
testcase_30 | AC | 2,333 ms
192,072 KB |
testcase_31 | AC | 2,287 ms
192,072 KB |
testcase_32 | AC | 2,276 ms
192,200 KB |
testcase_33 | AC | 1,522 ms
192,076 KB |
testcase_34 | AC | 1,568 ms
192,200 KB |
testcase_35 | AC | 1,521 ms
192,200 KB |
testcase_36 | AC | 1,938 ms
192,196 KB |
testcase_37 | AC | 1,928 ms
192,200 KB |
testcase_38 | AC | 1,920 ms
192,200 KB |
testcase_39 | AC | 1,530 ms
192,200 KB |
testcase_40 | AC | 1,549 ms
192,200 KB |
testcase_41 | AC | 1,539 ms
192,200 KB |
testcase_42 | AC | 1,545 ms
192,128 KB |
testcase_43 | AC | 1,519 ms
192,200 KB |
ソースコード
#ifdef t9unkubj #include"template.h" //#include"template_no_debug.h" #else #undef _GLIBCXX_DEBUG #pragma GCC optimize("O3") #define dbg(...) 199958 using namespace std; #include<bits/stdc++.h> using uint=unsigned; using ll=long long; using ull=unsigned long long; using ld=long double; using pii=pair<int,int>; using pll=pair<ll,ll>; template<class T>using vc=vector<T>; template<class T>using vvc=vc<vc<T>>; template<class T>using vvvc=vvc<vc<T>>; using vi=vc<int>; using vvi=vc<vi>; using vvvi=vc<vvi>; using vl=vc<ll>; using vvl=vc<vl>; using vvvl=vc<vvl>; template<class T>using smpq=priority_queue<T,vector<T>,greater<T>>; template<class T>using bipq=priority_queue<T>; #define rep(i,n) for(ll i=0;i<(ll)(n);i++) #define REP(i,j,n) for(ll i=(j);i<(ll)(n);i++) #define DREP(i,n,m) for(ll i=(n);i>=(m);i--) #define drep(i,n) for(ll i=((n)-1);i>=0;i--) #define all(x) x.begin(),x.end() #define rall(x) x.rbegin(),x.rend() #define mp make_pair #define pb push_back #define eb emplace_back #define fi first #define se second #define is insert #define bg begin() #define ed end() void scan(int&a) { cin >> a; } void scan(ll&a) { cin >> a; } void scan(string&a) { cin >> a; } void scan(char&a) { cin >> a; } void scan(uint&a) { cin >> a; } void scan(ull&a) { cin >> a; } void scan(bool&a) { cin >> a; } void scan(ld&a){ cin>> a;} template<class T> void scan(vector<T>&a) { for(auto&x:a) scan(x); } void read() {} template<class Head, class... Tail> void read(Head&head, Tail&... tail) { scan(head); read(tail...); } #define INT(...) int __VA_ARGS__; read(__VA_ARGS__); #define LL(...) ll __VA_ARGS__; read(__VA_ARGS__); #define ULL(...) ull __VA_ARGS__; read(__VA_ARGS__); #define STR(...) string __VA_ARGS__; read(__VA_ARGS__); #define CHR(...) char __VA_ARGS__; read(__VA_ARGS__); #define DBL(...) double __VA_ARGS__; read(__VA_ARGS__); #define LD(...) ld __VA_ARGS__; read(__VA_ARGS__); #define VC(type, name, ...) vector<type> name(__VA_ARGS__); read(name); #define VVC(type, name, size, ...) vector<vector<type>> name(size, vector<type>(__VA_ARGS__)); read(name); void print(int a) { cout << a; } void print(ll a) { cout << a; } void print(string a) { cout << a; } void print(char a) { cout << a; } void print(uint a) { cout << a; } void print(bool a) { cout << a; } void print(ull a) { cout << a; } void print(double a) { cout << a; } void print(ld a){ cout<< a; } template<class T> void print(vector<T>a) { for(int i=0;i<(int)a.size();i++){if(i)cout<<" ";print(a[i]);}cout<<endl;} void PRT() { cout <<endl; return ; } template<class T> void PRT(T a) { print(a); cout <<endl; return; } template<class Head, class... Tail> void PRT(Head head, Tail ... tail) { print(head); cout << " "; PRT(tail...); return; } template<class T,class F> bool chmin(T &x, F y){ if(x>y){ x=y; return true; } return false; } template<class T, class F> bool chmax(T &x, F y){ if(x<y){ x=y; return true; } return false; } void YesNo(bool b){ cout<<(b?"Yes":"No")<<endl; } void Yes(){ cout<<"Yes"<<endl; } void No(){ cout<<"No"<<endl; } template<class T> int popcount(T n){ return __builtin_popcountll(n); } template<class T> T sum(vc<T>&a){ return accumulate(all(a),T(0)); } template<class T> T max(vc<T>&a){ return *max_element(all(a)); } template<class T> T min(vc<T>&a){ return *min_element(all(a)); } template<class T> void unique(vc<T>&a){ a.erase(unique(all(a)),a.end()); } vvi readgraph(int n,int m,int off = -1){ vvi g(n); rep(i, m){ int u,v; cin>>u>>v; u+=off,v+=off; g[u].push_back(v); g[v].push_back(u); } return g; } vvi readtree(int n,int off=-1){ return readgraph(n,n-1,off); } template<class T> vc<T> presum(vc<T> &a){ vc<T> ret(a.size()+1); rep(i,a.size())ret[i+1]=ret[i]+a[i]; return ret; } template<class T, class F> vc<T> &operator+=(vc<T> &a,F b){ for (auto&v:a)v += b; return a; } template<class T, class F> vc<T> &operator-=(vc<T>&a,F b){ for (auto&v:a)v-=b; return a; } template<class T, class F> vc<T> &operator*=(vc<T>&a,F b){ for (auto&v:a)v*=b; return a; } #endif double pass_time=0; //Σ{0<=i<=n-1}floor((a*i+b)/m) //基本的なアイデアは寄与を考えて小さいケースへ互除法的に帰着するというもの template<class T=long long> //a*b+m,n^2がオーバーフローしないように! //つまりa=b=1e9などでintにしたらダメ T floor_sum(T n,T m,T a,T b){ if(a==0)return b/m*n; T ans=0; if(a>=m){ ans+=(n*(n-1))/2*(a/m); a%=m; } if(b>=m){ ans+=n*(b/m); b%=m; } T y=(a*n+b)/m; T z=(a*n+b)%m; if(y==0)return ans; return floor_sum(y,a,m,z)+ans; } template<class T,class G,class F> F modpow(T x,G p,F m){ T ret=1%m; x%=m; while(p){ if(p&1)ret=(1ll*ret*x)%m; x=(1ll*x*x)%m; p>>=1; } return ret; } template<class T> T extgcd(T a,T b,T&x,T&y){//ax+by=gcd(a,b)となるようなもの if(b==0){ x=1; y=0; return a; }else{ T res=extgcd(b,a%b,y,x); y-=(a/b)*x; return res; } } template<class T> pair<T,T> inv(T x,T m){ T a1,a2; T res=extgcd(x,m,a1,a2); return {a1,m/res}; } constexpr int mod=998244353; struct mint{ long long val; inline long long fast(long long x){ if(x<mod&&x>=0)return x; x%=mod; if(x<0)x+=mod; return x; } mint():val(0){} mint(long long val):val(fast(val)){} mint power(long long m)const { mint res(1); mint ret(*this); while(m){ if(m&1)res*=ret; ret*=ret; m>>=1; } return res; } mint& operator++() { val++; if (val == mod) val = 0; return *this; } mint& operator--() { if (val == 0)val=mod; val--; return *this; } mint operator++(int) { mint result = *this; ++*this; return result; } mint operator--(int) { mint result = *this; --*this; return result; } mint operator-() const { return mint(-val); } friend mint operator +(const mint&a,const mint&b) noexcept{ return mint(a)+=b; } friend mint operator -(const mint&a,const mint&b) noexcept{ return mint(a)-=b; } friend mint operator *(const mint&a,const mint&b) noexcept{ return mint(a)*=b; } friend mint operator /(const mint&a,const mint&b) noexcept{ return mint(a)/=b; } mint& operator+=(const mint&a)noexcept{ val+=a.val; if(val>=mod)val-=mod; return *this; } mint& operator-=(const mint&a)noexcept{ val-=a.val; if(val<0)val+=mod; return *this; } mint& operator*=(const mint&a){ val*=a.val; val=fast(val); return *this; } mint& operator/=(const mint&a){ val*=inv<long long>(a.val,mod).first; val=fast(val); return *this; } bool operator == (const mint&x)const noexcept{ return this->val==x.val; } bool operator != (const mint&x)const noexcept{ return this->val!=x.val; } friend ostream& operator << (ostream &os, const mint &x) noexcept { return os << x.val; } friend istream& operator >> (istream &is, mint &x) noexcept { long long v; is >> v; x=mint(v); return is; } }; vector<mint>fact(1,1),invfact(1,1); void build(int n){ if(n<(int)fact.size())return; fact=invfact=vector<mint>(n+1); fact[0]=1; for(int i=1;i<=n;i++)fact[i]=fact[i-1]*i; invfact[n]=(1/fact[n]); for(int i=n-1;i>=0;i--)invfact[i]=invfact[i+1]*(i+1); } mint C(int a,int b){//aCb if(a<0||b<0||a-b<0)return mint(0); while((int)fact.size()<=a){ fact.push_back(fact.back()*(fact.size())); } while((int)invfact.size()<=a){ invfact.push_back(invfact.back()/invfact.size()); } return fact[a]*invfact[b]*invfact[a-b]; } mint P(int a,int b){ if(a<b||b<0)return 0; return fact[a]*invfact[a-b]; } //a個のものからb個を重複を許して選ぶ mint H(int a,int b){ return C(a+b-1,b); } void print(mint a) { cout << a; } template<class T> pair<T,T> mod_solve(T a,T b,T m){//ax=b mod mとなるxを返す a%=m,b%=m;if(a<0)a+=m;if(b<0)b+=m; T g=gcd(gcd(a,b),m); a/=g,b/=g,m/=g; if(gcd(a,m)>1)return {-1,-1}; return {(inv(a,m).first*b)%m,inv(a,m).second}; } #include<vector> template <class T = long long > struct BIT { int n; std::vector<T>data; void add(int i,T x){ assert(i>=0&&i<n); i++; for(;i<=n;){ data[i - 1] += x; i += (i & -i); } return; } T internal_sum(int r){ T ret = 0; for(;r;){ ret += data[r - 1]; r -= (r & -r); } return ret; } T sum(int l,int r){ return internal_sum(r)-internal_sum(l); } BIT():n(0), data(0) {} BIT(int N):n(N), data(N) {} BIT(std::vector<T>& a){ n = a.size(); data.assign(n, 0); for (int i = 0; i < n; i++)add(i, a[i]); } int lower_bound(T w) { if (w <= 0) { return 0; } else { int x = 0, r = 1; while (r < n) r = r << 1; for (int len = r; len > 0; len = len >> 1) { if (x + len < n && data[x + len] < w) { w -= data[x + len]; x += len; } } return x; } } }; /* 平方分割 d[i]<Bとなるようなものについては前計算をそのまま利用 d[i]>=Bとなるものについてはd[i]<Bの前計算+ BITで点の個数を数えるクエリに変更 */ constexpr int N=6e4+1; constexpr int B=200; mint f1[B][N]; mint f2[B][N]; mint sm[B]; int cnt1[N]; int cnt2[N]; void solve(){ INT(n,m); VC(int,d,n); assert(n>=1&&n<=5e4); assert(m>=1&&m<=5e4); vc<mint>invs(N); REP(i,1,N){ if(m/i==0)continue; invs[i]=mint(1)/(m/i); } mint prod=1; rep(i,n)prod*=(m/d[i]); rep(i,n)assert(1<=d[i]&&d[i]<=m); REP(i,1,B){ REP(j,1,N){ f1[i][j]=floor_sum<ull>(m/i,j,i,i-1)%mod; f2[i][j]=floor_sum<ull>(m/j,i,j,j-1)%mod; } } BIT<mint>bit(N); mint ans=0; for(auto&x:d)cnt2[x]++; for(auto&x:d){ if(x<B){ for(int i=1;i<B;i++){ ans+=f1[i][x]*cnt1[i]*prod*invs[i]*invs[x]; } cnt1[x]++; cnt2[x]--; continue; }else{ for(int i=1;i<B;i++){ ans+=f1[i][x]*cnt1[i]*prod*invs[i]*invs[x]; } for(int i=1;i<B;i++){ ans+=f2[i][x]*cnt2[i]*prod*invs[i]*invs[x]; } for(int k=x;k<=m;k+=x){ ans+=bit.sum(k+1,N)*invs[x]; } for(int k=x;k<=m;k+=x){ bit.add(k,prod*invs[x]); } } } PRT(ans); } signed main(){ #ifdef t9unkubj freopen("input.txt", "r", stdin); freopen("output.txt", "w", stdout); #endif cin.tie(0)->sync_with_stdio(0); pass_time=clock(); int t=1; //cin>>t; while(t--)solve(); pass_time=clock()-pass_time; dbg(pass_time/CLOCKS_PER_SEC); }