結果
問題 | No.1364 [Renaming] Road to Cherry from Zelkova |
ユーザー | kappybar |
提出日時 | 2021-01-23 17:12:28 |
言語 | C++14 (gcc 13.3.0 + boost 1.87.0) |
結果 |
WA
|
実行時間 | - |
コード長 | 3,544 bytes |
コンパイル時間 | 2,572 ms |
コンパイル使用メモリ | 196,224 KB |
実行使用メモリ | 37,264 KB |
最終ジャッジ日時 | 2024-12-31 06:33:45 |
合計ジャッジ時間 | 14,117 ms |
ジャッジサーバーID (参考情報) |
judge4 / judge2 |
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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
6,820 KB |
testcase_01 | AC | 2 ms
6,816 KB |
testcase_02 | AC | 2 ms
6,820 KB |
testcase_03 | AC | 2 ms
6,820 KB |
testcase_04 | AC | 2 ms
6,816 KB |
testcase_05 | AC | 2 ms
6,820 KB |
testcase_06 | AC | 2 ms
6,816 KB |
testcase_07 | AC | 2 ms
6,820 KB |
testcase_08 | AC | 16 ms
6,816 KB |
testcase_09 | AC | 8 ms
6,820 KB |
testcase_10 | AC | 16 ms
6,820 KB |
testcase_11 | AC | 14 ms
6,816 KB |
testcase_12 | AC | 16 ms
6,816 KB |
testcase_13 | AC | 221 ms
18,352 KB |
testcase_14 | AC | 306 ms
17,524 KB |
testcase_15 | AC | 307 ms
19,432 KB |
testcase_16 | AC | 218 ms
14,104 KB |
testcase_17 | AC | 114 ms
14,120 KB |
testcase_18 | AC | 404 ms
24,572 KB |
testcase_19 | AC | 408 ms
24,452 KB |
testcase_20 | AC | 393 ms
24,700 KB |
testcase_21 | AC | 392 ms
24,700 KB |
testcase_22 | AC | 383 ms
24,708 KB |
testcase_23 | AC | 82 ms
9,488 KB |
testcase_24 | AC | 82 ms
6,816 KB |
testcase_25 | AC | 224 ms
13,716 KB |
testcase_26 | AC | 384 ms
18,288 KB |
testcase_27 | AC | 275 ms
13,328 KB |
testcase_28 | AC | 167 ms
11,060 KB |
testcase_29 | AC | 260 ms
12,340 KB |
testcase_30 | AC | 170 ms
11,184 KB |
testcase_31 | AC | 123 ms
10,032 KB |
testcase_32 | AC | 202 ms
10,644 KB |
testcase_33 | AC | 347 ms
16,636 KB |
testcase_34 | AC | 326 ms
18,136 KB |
testcase_35 | WA | - |
testcase_36 | AC | 351 ms
20,200 KB |
testcase_37 | AC | 200 ms
9,700 KB |
testcase_38 | AC | 269 ms
11,680 KB |
testcase_39 | AC | 270 ms
11,660 KB |
testcase_40 | AC | 266 ms
11,908 KB |
testcase_41 | AC | 268 ms
11,720 KB |
testcase_42 | AC | 269 ms
11,592 KB |
testcase_43 | AC | 169 ms
37,264 KB |
testcase_44 | AC | 137 ms
20,908 KB |
testcase_45 | AC | 156 ms
30,152 KB |
testcase_46 | AC | 39 ms
16,144 KB |
testcase_47 | AC | 2 ms
6,816 KB |
ソースコード
#include <bits/stdc++.h> #define rep(i,n) for(int i=0;i<(int)(n);i++) #define chmin(x,y) x = min((x),(y)); #define chmax(x,y) x = max((x),(y)); using namespace std; using ll = long long ; using P = pair<int,int> ; using pll = pair<long long,long long>; const int INF = 1e9; const long long LINF = 1e17; const int MOD = 1000000007; //const int MOD = 998244353; const double PI = 3.14159265358979323846; #include <atcoder/scc> using namespace atcoder; template<int mod> struct ModInt{ long long x=0; constexpr ModInt(long long x=0):x((x%mod+mod)%mod){} constexpr ModInt operator+(const ModInt& r)const{return ModInt(*this)+=r;} constexpr ModInt operator-(const ModInt& r)const{return ModInt(*this)-=r;} constexpr ModInt operator*(const ModInt& r)const{return ModInt(*this)*=r;} constexpr ModInt operator/(const ModInt& r)const{return ModInt(*this)/=r;} constexpr ModInt& operator+=(const ModInt& r){ if((x+=r.x)>=mod) x-=mod; return *this;} constexpr ModInt& operator-=(const ModInt& r){ if((x-=r.x)<0) x+=mod; return *this;} constexpr ModInt& operator*=(const ModInt& r){ if((x*=r.x)>=mod) x%=mod; return *this;} constexpr ModInt& operator/=(const ModInt& r){ return *this*=r.inv();} ModInt inv() const { long long s=x,sx=1,sy=0,t=mod,tx=0,ty=1; while(s%t!=0){ long long temp=s/t,u=s-t*temp,ux=sx-temp*tx,uy=sy-temp*ty; s=t;sx=tx;sy=ty; t=u;tx=ux;ty=uy; } return ModInt(tx); } ModInt pow(long long n) const { ModInt a=1; ModInt b=*this; while(n>0){ if(n&1) a*=b; b*=b; n>>=1; } return a; } friend constexpr ostream& operator<<(ostream& os,const ModInt<mod>& a) {return os << a.x;} friend constexpr istream& operator>>(istream& is,ModInt<mod>& a) {return is >> a.x;} }; using mint = ModInt<MOD>; struct edge{ ll to,l,a; }; mint dp[100005]; mint cnt[100005]; int main(){ int n,m; cin >> n >> m; vector<vector<edge>> G(n+1); scc_graph graph(n+1); rep(i,m){ ll u,v,l,a; cin >> u >> v >> l >> a; G[u].push_back(edge{v,l,a}); graph.add_edge(u,v); } vector<vector<int>> topo = graph.scc(); map<int,int> real_temp; rep(i,topo.size()){ for(int j:topo[i]){ real_temp[j] = i; } } vector<int> seen(topo.size(),0); vector<bool> dfs_res(topo.size(),false); int n_temp = real_temp[n]; bool cycle = false; auto dfs = [&](auto&& dfs,int i) -> bool{ if(seen[i] == 1) return dfs_res[i]; seen[i] = 1; bool ok = false; if(i == n_temp) ok = true; for(int j:topo[i]){ for(auto e:G[j]){ int to = real_temp[e.to]; if(seen[to] == 1) continue; bool temp = dfs(dfs,to); if(temp) ok = true; } } if(ok && (int)topo[i].size() > 1){ cycle = true; } return dfs_res[i] = ok; }; dfs(dfs,0); if(seen[n_temp] == 0){ cout << 0 << endl; return 0; } if(cycle){ cout << "INF" << endl; return 0; } dp[0] = 0; cnt[0] = 1; int zero_temp = real_temp[0]; for(int ii=zero_temp;ii<topo.size();ii++){ int i = topo[ii][0]; for(auto e:G[i]){ dp[e.to] += dp[i] * e.a + cnt[i] * e.a * e.l; cnt[e.to] += cnt[i] * e.a; } } cout << dp[n] << endl; return 0; }