結果
問題 | No.2149 Vanitas Vanitatum |
ユーザー | sigma425 |
提出日時 | 2022-12-07 02:28:25 |
言語 | C++17 (gcc 12.3.0 + boost 1.83.0) |
結果 |
AC
|
実行時間 | 62 ms / 2,000 ms |
コード長 | 7,352 bytes |
コンパイル時間 | 2,537 ms |
コンパイル使用メモリ | 212,484 KB |
実行使用メモリ | 38,400 KB |
最終ジャッジ日時 | 2024-10-13 12:50:15 |
合計ジャッジ時間 | 4,721 ms |
ジャッジサーバーID (参考情報) |
judge2 / judge3 |
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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 | 56 ms
38,272 KB |
testcase_01 | AC | 62 ms
38,272 KB |
testcase_02 | AC | 60 ms
38,400 KB |
testcase_03 | AC | 57 ms
38,400 KB |
testcase_04 | AC | 58 ms
38,272 KB |
testcase_05 | AC | 59 ms
38,400 KB |
testcase_06 | AC | 58 ms
38,272 KB |
testcase_07 | AC | 56 ms
38,272 KB |
testcase_08 | AC | 56 ms
38,400 KB |
testcase_09 | AC | 57 ms
38,272 KB |
testcase_10 | AC | 56 ms
38,400 KB |
testcase_11 | AC | 56 ms
38,272 KB |
testcase_12 | AC | 56 ms
38,400 KB |
testcase_13 | AC | 56 ms
38,400 KB |
testcase_14 | AC | 56 ms
38,272 KB |
testcase_15 | AC | 57 ms
38,272 KB |
testcase_16 | AC | 55 ms
38,400 KB |
testcase_17 | AC | 55 ms
38,272 KB |
testcase_18 | AC | 56 ms
38,400 KB |
testcase_19 | AC | 59 ms
38,400 KB |
testcase_20 | AC | 59 ms
38,400 KB |
testcase_21 | AC | 56 ms
38,272 KB |
testcase_22 | AC | 57 ms
38,272 KB |
testcase_23 | AC | 59 ms
38,272 KB |
testcase_24 | AC | 57 ms
38,272 KB |
testcase_25 | AC | 56 ms
38,400 KB |
testcase_26 | AC | 59 ms
38,400 KB |
ソースコード
#include <bits/stdc++.h> using namespace std; using ll = long long; using uint = unsigned int; using ull = unsigned long long; #define rep(i,n) for(int i=0;i<int(n);i++) #define rep1(i,n) for(int i=1;i<=int(n);i++) #define per(i,n) for(int i=int(n)-1;i>=0;i--) #define per1(i,n) for(int i=int(n);i>0;i--) #define all(c) c.begin(),c.end() #define si(x) int(x.size()) #define pb push_back #define eb emplace_back #define fs first #define sc second template<class T> using V = vector<T>; template<class T> using VV = vector<vector<T>>; template<class T,class U> bool chmax(T& x, U y){ if(x<y){ x=y; return true; } return false; } template<class T,class U> bool chmin(T& x, U y){ if(y<x){ x=y; return true; } return false; } template<class T> void mkuni(V<T>& v){sort(all(v));v.erase(unique(all(v)),v.end());} template<class T> int lwb(const V<T>& v, const T& a){return lower_bound(all(v),a) - v.begin();} template<class T> V<T> Vec(size_t a) { return V<T>(a); } template<class T, class... Ts> auto Vec(size_t a, Ts... ts) { return V<decltype(Vec<T>(ts...))>(a, Vec<T>(ts...)); } template<class S,class T> ostream& operator<<(ostream& o,const pair<S,T> &p){ return o<<"("<<p.fs<<","<<p.sc<<")"; } template<class T> ostream& operator<<(ostream& o,const vector<T> &vc){ o<<"{"; for(const T& v:vc) o<<v<<","; o<<"}"; return o; } constexpr ll TEN(int n) { return (n == 0) ? 1 : 10 * TEN(n-1); } #ifdef LOCAL #define show(x) cerr << "LINE" << __LINE__ << " : " << #x << " = " << (x) << endl void dmpr(ostream& os){os<<endl;} template<class T,class... Args> void dmpr(ostream&os,const T&t,const Args&... args){ os<<t<<" ~ "; dmpr(os,args...); } #define shows(...) cerr << "LINE" << __LINE__ << " : ";dmpr(cerr,##__VA_ARGS__) #define dump(x) cerr << "LINE" << __LINE__ << " : " << #x << " = {"; \ for(auto v: x) cerr << v << ","; cerr << "}" << endl; #else #define show(x) void(0) #define dump(x) void(0) #define shows(...) void(0) #endif template<class D> D divFloor(D a, D b){ return a / b - (((a ^ b) < 0 && a % b != 0) ? 1 : 0); } template<class D> D divCeil(D a, D b) { return a / b + (((a ^ b) > 0 && a % b != 0) ? 1 : 0); } template<unsigned int mod_> struct ModInt{ using uint = unsigned int; using ll = long long; using ull = unsigned long long; constexpr static uint mod = mod_; uint v; ModInt():v(0){} ModInt(ll _v):v(normS(_v%mod+mod)){} explicit operator bool() const {return v!=0;} static uint normS(const uint &x){return (x<mod)?x:x-mod;} // [0 , 2*mod-1] -> [0 , mod-1] static ModInt make(const uint &x){ModInt m; m.v=x; return m;} ModInt operator+(const ModInt& b) const { return make(normS(v+b.v));} ModInt operator-(const ModInt& b) const { return make(normS(v+mod-b.v));} ModInt operator-() const { return make(normS(mod-v)); } ModInt operator*(const ModInt& b) const { return make((ull)v*b.v%mod);} ModInt operator/(const ModInt& b) const { return *this*b.inv();} ModInt& operator+=(const ModInt& b){ return *this=*this+b;} ModInt& operator-=(const ModInt& b){ return *this=*this-b;} ModInt& operator*=(const ModInt& b){ return *this=*this*b;} ModInt& operator/=(const ModInt& b){ return *this=*this/b;} ModInt& operator++(int){ return *this=*this+1;} ModInt& operator--(int){ return *this=*this-1;} template<class T> friend ModInt operator+(T a, const ModInt& b){ return (ModInt(a) += b);} template<class T> friend ModInt operator-(T a, const ModInt& b){ return (ModInt(a) -= b);} template<class T> friend ModInt operator*(T a, const ModInt& b){ return (ModInt(a) *= b);} template<class T> friend ModInt operator/(T a, const ModInt& b){ return (ModInt(a) /= b);} ModInt pow(ll p) const { if(p<0) return inv().pow(-p); ModInt a = 1; ModInt x = *this; while(p){ if(p&1) a *= x; x *= x; p >>= 1; } return a; } ModInt inv() const { // should be prime return pow(mod-2); } // ll extgcd(ll a,ll b,ll &x,ll &y) const{ // ll p[]={a,1,0},q[]={b,0,1}; // while(*q){ // ll t=*p/ *q; // rep(i,3) swap(p[i]-=t*q[i],q[i]); // } // if(p[0]<0) rep(i,3) p[i]=-p[i]; // x=p[1],y=p[2]; // return p[0]; // } // ModInt inv() const { // ll x,y; // extgcd(v,mod,x,y); // return make(normS(x+mod)); // } bool operator==(const ModInt& b) const { return v==b.v;} bool operator!=(const ModInt& b) const { return v!=b.v;} bool operator<(const ModInt& b) const { return v<b.v;} friend istream& operator>>(istream &o,ModInt& x){ ll tmp; o>>tmp; x=ModInt(tmp); return o; } friend ostream& operator<<(ostream &o,const ModInt& x){ return o<<x.v;} }; using mint = ModInt<998244353>; //using mint = ModInt<1000000007>; V<mint> fact,ifact,invs; mint Choose(int a,int b){ if(b<0 || a<b) return 0; return fact[a] * ifact[b] * ifact[a-b]; } void InitFact(int N){ //[0,N] N++; fact.resize(N); ifact.resize(N); invs.resize(N); fact[0] = 1; rep1(i,N-1) fact[i] = fact[i-1] * i; ifact[N-1] = fact[N-1].inv(); for(int i=N-2;i>=0;i--) ifact[i] = ifact[i+1] * (i+1); rep1(i,N-1) invs[i] = fact[i-1] * ifact[i]; } struct UnionFind{ vector<int> par,sz; UnionFind(int N){ par.assign(N,0); sz.assign(N,1); rep(i,N) par[i]=i; } int find(int x){ if(par[x]==x) return x; return par[x]=find(par[x]); } bool same(int x,int y){ return find(x)==find(y); } void unite(int x,int y){ x=find(x),y=find(y); if(x==y) return; par[y]=x; sz[x] += sz[y]; } }; int sgn(V<int> o){ int N = si(o); UnionFind UF(N); rep(i,N) UF.unite(i,o[i]); int s = 1; rep(i,N) if(UF.find(i) == i){ if(UF.sz[i]%2 == 0) s = -s; } return s; } mint brute(V<int> A){ int N = si(A); V<int> o(N); iota(all(o),0); mint res = 0; do{ mint tmp = sgn(o); rep(i,N){ int v = A[i] - o[i]; if(v < 0) tmp = 0; else tmp *= ifact[v]; } res += tmp; }while(next_permutation(all(o))); return res; } // decreasing -> decreasing V<int> ConjugateYoung(V<int> a){ if(a.empty()) return a; int w = a[0]; V<int> b(w); int h = si(a); rep(j,w){ while(h>0 && a[h-1] <= j) h--; b[j] = h; } return b; } // hook length formula mint Hook(V<int> a){ int n = accumulate(all(a),0); auto b = ConjugateYoung(a); mint res = fact[n]; rep(i,si(a)){ rep(j,a[i]){ res *= invs[a[i]+b[j]-i-j-1]; } } return res; } mint solve(V<int> A){ // res = det ( 1 / (A_i-j)! )_{i,j} // f^λ = N! det ( 1 / (λ_i-i+j)! )_{i,j} int N = si(A); // mint god = brute(A); V<int> lam(N); rep(i,N) lam[i] = A[i]-i; reverse(all(lam)); int S = accumulate(all(lam),0); mint res = Hook(lam) * ifact[S]; show("---------------"); show(A); show(res); // show(god); show(lam); return res; } int main(){ cin.tie(0); ios::sync_with_stdio(false); //DON'T USE scanf/printf/puts !! cout << fixed << setprecision(20); InitFact(TEN(6)*3); /* res = (-1)^縦の個数 χ^λ(2^m) χ^λ(2^m) = [x^(λ+δ)] p_{2^m}a_δ = [x^(λ+δ)] (x1^2+..+xn^2)^m * det (x1^{n-1} x1 1) (x2^{n-1} x2 2) : */ int N; cin >> N; V<int> A(N); rep(i,N) cin >> A[i]; int m = accumulate(all(A),0); if(m&1){ cout << 0 << endl; return 0; } m /= 2; rep(i,N) A[i] += i; mint ans = 1; { V<int> B; rep(i,N) if(A[i]%2 == 0){ B.pb(A[i]/2); } if(si(B) != (N+1)/2){ cout << 0 << endl; return 0; } ans *= solve(B); } { V<int> B; rep(i,N) if(A[i]%2 == 1){ B.pb(A[i]/2); } ans *= solve(B); } cout << ans * fact[m] << endl; }