結果
問題 | No.329 全射 |
ユーザー | kei |
提出日時 | 2018-10-14 15:27:38 |
言語 | C++14 (gcc 12.3.0 + boost 1.83.0) |
結果 |
WA
|
実行時間 | - |
コード長 | 3,170 bytes |
コンパイル時間 | 1,688 ms |
コンパイル使用メモリ | 171,176 KB |
実行使用メモリ | 6,824 KB |
最終ジャッジ日時 | 2024-10-12 18:18:06 |
合計ジャッジ時間 | 4,487 ms |
ジャッジサーバーID (参考情報) |
judge2 / 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 | 5 ms
6,816 KB |
testcase_01 | AC | 6 ms
6,816 KB |
testcase_02 | AC | 7 ms
6,816 KB |
testcase_03 | AC | 6 ms
6,816 KB |
testcase_04 | AC | 7 ms
6,816 KB |
testcase_05 | AC | 5 ms
6,824 KB |
testcase_06 | AC | 6 ms
6,820 KB |
testcase_07 | AC | 7 ms
6,820 KB |
testcase_08 | AC | 6 ms
6,816 KB |
testcase_09 | AC | 6 ms
6,816 KB |
testcase_10 | AC | 6 ms
6,820 KB |
testcase_11 | AC | 6 ms
6,816 KB |
testcase_12 | AC | 7 ms
6,816 KB |
testcase_13 | WA | - |
testcase_14 | WA | - |
testcase_15 | WA | - |
testcase_16 | WA | - |
testcase_17 | WA | - |
testcase_18 | WA | - |
testcase_19 | WA | - |
testcase_20 | WA | - |
testcase_21 | WA | - |
testcase_22 | WA | - |
testcase_23 | WA | - |
testcase_24 | WA | - |
testcase_25 | WA | - |
testcase_26 | WA | - |
testcase_27 | WA | - |
testcase_28 | WA | - |
testcase_29 | WA | - |
testcase_30 | WA | - |
testcase_31 | WA | - |
testcase_32 | WA | - |
testcase_33 | WA | - |
testcase_34 | WA | - |
testcase_35 | WA | - |
testcase_36 | WA | - |
testcase_37 | WA | - |
testcase_38 | WA | - |
testcase_39 | WA | - |
testcase_40 | WA | - |
testcase_41 | WA | - |
testcase_42 | WA | - |
ソースコード
#include "bits/stdc++.h" using namespace std; typedef long long ll; typedef pair<int, int> pii; typedef pair<ll, ll> pll; const int INF = 1e9; const ll LINF = 1e18; template<class S,class T> ostream& operator << (ostream& out,const pair<S,T>& o){ out << "(" << o.first << "," << o.second << ")"; return out; } template<class T> ostream& operator << (ostream& out,const vector<T> V){ for(int i = 0; i < V.size(); i++){ out << V[i]; if(i!=V.size()-1) out << " ";} return out; } template<class T> ostream& operator << (ostream& out,const vector<vector<T> > Mat){ for(int i = 0; i < Mat.size(); i++) { if(i != 0) out << endl; out << Mat[i];} return out; } template<class S,class T> ostream& operator << (ostream& out,const map<S,T> mp){ out << "{ "; for(auto it = mp.begin(); it != mp.end(); it++){ out << it->first << ":" << it->second; if(mp.size()-1 != distance(mp.begin(),it)) out << ", "; } out << " }"; return out; } /* <url:https://yukicoder.me/problems/no/329> 問題文============================================================ ================================================================= 解説============================================================= ================================================================ */ const ll MAX_N = 1e5 + 10; const ll MOD = 1e9+7; ll Inv[MAX_N]; ll fact[MAX_N]; ll factInv[MAX_N]; void Inv_init(){ Inv[1] = 1; for(int i = 2; i < MAX_N; i++) { Inv[i] = Inv[MOD%i] * (MOD - MOD/i) % MOD; } } void fact_init(){ fact[0] = fact[1] = factInv[0] = factInv[1] = 1; for(int i = 2; i < MAX_N; i++){ fact[i] = (fact[i-1] * i) % MOD; factInv[i] = (factInv[i-1] * Inv[i])%MOD; } } // a^b % MOD; ll powmod(ll a,ll b) {ll res=1;a%=MOD; for(;b;b>>=1){if(b&1)res=res*a%MOD;a=a*a%MOD;}return res;} const ll MAXNM = 100; //i個の物を、j個の区別できる箱に、最低1個ずつ入れる入れ方 ll I2J[MAXNM][MAXNM]; // Ai -> Ajへの全射の数 void I2J_init(){ I2J[0][0] = 1; for(int i = 1; i < MAXNM; i++){ for(int j = 1; j < MAXNM; j++){ I2J[i][j] += I2J[i-1][j] * j %MOD; I2J[i][j] += I2J[i-1][j-1] * j %MOD; I2J[i][j] %= MOD; } } } void init(){ Inv_init(); fact_init(); I2J_init(); } ll G[300][300]; ll solve(){ init(); ll res = 0; ll N,M; cin >> N >> M; vector<ll> w(N); for(auto& in:w) cin >> in; if(M == 0){ for(int i = 0; i < N;i++) (res += fact[w[i]])%=MOD; return res; } for(int i = 0; i < N;i++) G[i][i] = w[i]; for(int i = 0; i < M;i++){ int I,J; cin >> I >> J; I--; J--; G[I][J] = min(w[I],w[J]); } for(int i = 0; i < N;i++){ for(int j = 0; j < N;j++){ for(int k = 0; k < N;k++){ G[j][k] = max(G[j][k],min(G[j][i],G[i][k])); } } } for(int i = 0; i < N;i++){ for(int j = 0; j < N;j++){ if(G[i][j] >= w[j]){ (res += I2J[w[i]][w[j]])%=MOD; } } } return res; } int main(void) { cin.tie(0); ios_base::sync_with_stdio(false); cout << solve() << endl; return 0; }