結果
問題 | No.329 全射 |
ユーザー | paruki |
提出日時 | 2016-06-22 06:12:37 |
言語 | C++14 (gcc 12.3.0 + boost 1.83.0) |
結果 |
TLE
|
実行時間 | - |
コード長 | 3,859 bytes |
コンパイル時間 | 2,293 ms |
コンパイル使用メモリ | 187,004 KB |
実行使用メモリ | 10,496 KB |
最終ジャッジ日時 | 2024-10-11 19:14:49 |
合計ジャッジ時間 | 6,369 ms |
ジャッジサーバーID (参考情報) |
judge1 / judge4 |
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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 | 2 ms
10,496 KB |
testcase_01 | AC | 2 ms
5,248 KB |
testcase_02 | AC | 2 ms
5,248 KB |
testcase_03 | AC | 2 ms
5,248 KB |
testcase_04 | AC | 2 ms
5,248 KB |
testcase_05 | AC | 2 ms
5,248 KB |
testcase_06 | AC | 2 ms
5,248 KB |
testcase_07 | AC | 2 ms
5,248 KB |
testcase_08 | AC | 2 ms
5,248 KB |
testcase_09 | AC | 2 ms
5,248 KB |
testcase_10 | AC | 2 ms
5,248 KB |
testcase_11 | AC | 2 ms
5,248 KB |
testcase_12 | AC | 2 ms
5,248 KB |
testcase_13 | TLE | - |
testcase_14 | -- | - |
testcase_15 | -- | - |
testcase_16 | -- | - |
testcase_17 | -- | - |
testcase_18 | -- | - |
testcase_19 | -- | - |
testcase_20 | -- | - |
testcase_21 | -- | - |
testcase_22 | -- | - |
testcase_23 | -- | - |
testcase_24 | -- | - |
testcase_25 | -- | - |
testcase_26 | -- | - |
testcase_27 | -- | - |
testcase_28 | -- | - |
testcase_29 | -- | - |
testcase_30 | -- | - |
testcase_31 | -- | - |
testcase_32 | -- | - |
testcase_33 | -- | - |
testcase_34 | -- | - |
testcase_35 | -- | - |
testcase_36 | -- | - |
testcase_37 | -- | - |
testcase_38 | -- | - |
testcase_39 | -- | - |
testcase_40 | -- | - |
testcase_41 | -- | - |
testcase_42 | -- | - |
ソースコード
#include "bits/stdc++.h" using namespace std; #define FOR(i,j,k) for(int (i)=(j);(i)<(int)(k);++(i)) #define rep(i,j) FOR(i,0,j) #define each(x,y) for(auto &(x):(y)) #define mp make_pair #define all(x) (x).begin(),(x).end() #define debug(x) cout<<#x<<": "<<(x)<<endl #define smax(x,y) (x)=max((x),(y)) #define smin(x,y) (x)=min((x),(y)) #define MEM(x,y) memset((x),(y),sizeof (x)) #define sz(x) (int)(x).size() typedef long long ll; typedef pair<int, int> pii; typedef vector<int> vi; typedef vector<ll> vll; template<int MOD> class ModInt{ public: ModInt():value(0){} ModInt(int val):value(val<0?MOD+val%MOD:val%MOD){ } ModInt& operator+=(ModInt that){ value = value+that.value; if(value>=MOD)value-=MOD; return *this; } ModInt& operator-=(ModInt that){ value -= that.value; if(value<0)value+=MOD; return *this; } ModInt& operator*=(ModInt that){ value = (int)((long long)value * that.value % MOD); return *this; } ModInt &operator/=(ModInt that){ return *this *= that.inverse(); } ModInt operator+(ModInt that) const{ return ModInt(*this)+=that; } ModInt operator-(ModInt that) const{ return ModInt(*this)-=that; } ModInt operator*(ModInt that) const{ return ModInt(*this)*=that; } ModInt operator/(ModInt that) const { return ModInt(*this) /= that; } ModInt operator^(long long k) const{ ModInt n = *this, res = 1; while(k){ if(k & 1)res *= n; n *= n; k >>= 1; } return res; } ModInt inverse() const { long long a = value, b = MOD, u = 1, v = 0; while(b) { long long t = a / b; a -= t * b; swap(a, b); u -= t * v; swap(u, v); } return ModInt((int)u); } int toi() const{ return value; } private: int value; }; typedef ModInt<1000000007> mint; ostream& operator<<(ostream& os, const mint& x){ os << x.toi(); return os; } template <class Val> vector<Val> factorials(int n){ vector<Val> res(n + 1); res[0] = res[1] = 1; for(int i = 2; i <= n; ++i) res[i] = res[i - 1] * i; return res; } mint nCr(int n, int r, const vector<mint> &fact){ return fact[n] / (fact[r] * fact[n - r]); } mint countSurjectiveFunctions(int n, int k, const vector<mint> &fact){ mint res = 0; for(int i = 1; i <= k; ++i){ mint d = nCr(k, i, fact); d *= (mint(i)^n); if((k - i) % 2)d *= -1; res += d; } return res; } vector<vector<bool>> connectivity(vector<vector<int>> G, vi &num){ int V = (int)G.size(); vector<vector<bool>> res; for(int u = 0; u < V; ++u){ vector<bool> temp(V); vi minmin(V); temp[u] = true; queue<pii> que; que.push(mp(u,num[u])); while(que.size()){ int v, mini; tie(v, mini) = que.front(); que.pop(); if(minmin[v]>=mini)continue; minmin[v] = mini; for(int w : G[v])if(minmin[w]<mini){ if(mini >= num[w]) temp[w] = true; que.push(mp(w, min(mini, num[w]))); } } res.push_back(temp); } return res; } int main(){ ios::sync_with_stdio(0); cin.tie(0); int N, M; auto fact = factorials<mint>(1000); cin >> N >> M; vi w(N); rep(i, N)cin >> w[i]; vector<vi> G(N); rep(i, M){ int u, v; cin >> u >> v; --u; --v; G[u].push_back(v); } auto con = connectivity(G, w); mint ans = 0; rep(i, N)rep(j, N)if(con[i][j]){ ans += countSurjectiveFunctions(w[i], w[j], fact); } cout << ans << endl; }