結果
問題 | No.1364 [Renaming] Road to Cherry from Zelkova |
ユーザー | milanis48663220 |
提出日時 | 2021-01-22 22:43:38 |
言語 | C++17 (gcc 12.3.0 + boost 1.83.0) |
結果 |
WA
|
実行時間 | - |
コード長 | 4,750 bytes |
コンパイル時間 | 1,281 ms |
コンパイル使用メモリ | 108,668 KB |
実行使用メモリ | 34,588 KB |
最終ジャッジ日時 | 2024-06-08 16:29:30 |
合計ジャッジ時間 | 7,173 ms |
ジャッジサーバーID (参考情報) |
judge1 / 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 | 4 ms
7,296 KB |
testcase_01 | AC | 3 ms
7,296 KB |
testcase_02 | AC | 5 ms
7,296 KB |
testcase_03 | AC | 4 ms
7,424 KB |
testcase_04 | AC | 4 ms
7,296 KB |
testcase_05 | AC | 4 ms
7,296 KB |
testcase_06 | AC | 4 ms
7,296 KB |
testcase_07 | AC | 4 ms
7,296 KB |
testcase_08 | AC | 12 ms
9,048 KB |
testcase_09 | AC | 6 ms
7,808 KB |
testcase_10 | AC | 11 ms
8,448 KB |
testcase_11 | AC | 10 ms
8,576 KB |
testcase_12 | AC | 10 ms
8,320 KB |
testcase_13 | AC | 122 ms
24,596 KB |
testcase_14 | AC | 155 ms
22,604 KB |
testcase_15 | AC | 157 ms
25,060 KB |
testcase_16 | AC | 106 ms
19,116 KB |
testcase_17 | AC | 59 ms
19,676 KB |
testcase_18 | AC | 216 ms
31,068 KB |
testcase_19 | AC | 212 ms
31,056 KB |
testcase_20 | AC | 210 ms
31,196 KB |
testcase_21 | AC | 213 ms
31,080 KB |
testcase_22 | AC | 210 ms
31,192 KB |
testcase_23 | AC | 42 ms
14,324 KB |
testcase_24 | AC | 29 ms
9,856 KB |
testcase_25 | AC | 91 ms
18,432 KB |
testcase_26 | AC | 146 ms
22,656 KB |
testcase_27 | AC | 94 ms
17,024 KB |
testcase_28 | AC | 66 ms
15,616 KB |
testcase_29 | AC | 85 ms
16,128 KB |
testcase_30 | AC | 67 ms
15,616 KB |
testcase_31 | AC | 50 ms
14,972 KB |
testcase_32 | AC | 67 ms
15,104 KB |
testcase_33 | AC | 128 ms
20,352 KB |
testcase_34 | AC | 129 ms
22,264 KB |
testcase_35 | WA | - |
testcase_36 | WA | - |
testcase_37 | AC | 63 ms
13,696 KB |
testcase_38 | AC | 82 ms
15,360 KB |
testcase_39 | AC | 82 ms
15,360 KB |
testcase_40 | AC | 84 ms
15,360 KB |
testcase_41 | AC | 86 ms
15,360 KB |
testcase_42 | AC | 84 ms
15,360 KB |
testcase_43 | AC | 77 ms
34,588 KB |
testcase_44 | AC | 57 ms
24,972 KB |
testcase_45 | AC | 69 ms
31,160 KB |
testcase_46 | AC | 23 ms
18,956 KB |
testcase_47 | WA | - |
ソースコード
#include <iostream> #include <algorithm> #include <iomanip> #include <vector> #include <queue> #include <set> #include <map> #include <cassert> #define debug_value(x) cerr << "line" << __LINE__ << ":<" << __func__ << ">:" << #x << "=" << x << endl; #define debug(x) cerr << "line" << __LINE__ << ":<" << __func__ << ">:" << x << endl; template<class T> inline bool chmax(T& a, T b) { if (a < b) { a = b; return 1; } return 0; } template<class T> inline bool chmin(T& a, T b) { if (a > b) { a = b; return 1; } return 0; } using namespace std; typedef long long ll; const ll MOD = 1000000007; class ModInt{ public: ll v; ModInt(ll _v = 0){ if(_v >= MOD) _v %= MOD; v = _v; } ModInt operator+(ll n){ return ModInt((v+n)%MOD); } ModInt operator-(ll n){ return ModInt((v-n+MOD)%MOD); } ModInt operator*(ll n){ if(n >= MOD) n %= MOD; return ModInt((v*n)%MOD); } ModInt operator/(ll n){ return ModInt((ModInt(n).inv()*v).v%MOD); } void operator+=(ll n){ v = (v+n)%MOD; } void operator-=(ll n){ v = (v-n+MOD)%MOD; } void operator*=(ll n){ v = (v*n+MOD)%MOD; } ModInt operator+(ModInt n){ return ModInt((v+n.v)%MOD); } ModInt operator-(ModInt n){ return ModInt((v-n.v+MOD)%MOD); } ModInt operator*(ModInt n){ return ModInt((v*n.v)%MOD); } ModInt operator/(ModInt n){ return ModInt((n.inv()*v).v%MOD); } void operator+=(ModInt n){ v = (v+n.v)%MOD; } void operator-=(ModInt n){ v = (v-n.v+MOD)%MOD; } void operator*=(ModInt n){ v = (v*n.v)%MOD; } void operator=(ModInt n){ v = n.v; } bool operator==(ModInt n){ return v == n.v; } bool operator!=(ModInt n){ return v != n.v; } void operator=(ll n){ v = n; } ModInt inv(){ if(v == 1) return ModInt(1); else return ModInt(MOD-ModInt(MOD%v).inv().v*(MOD/v)%MOD); } }; ostream& operator<<(ostream& os, const ModInt& m){ os << m.v; return os; } istream & operator >> (istream &in, ModInt &m){ in >> m.v; return in; } class Scc{ public: int N; vector<vector<int>> G; vector<vector<int>> G_inv; vector<int> idx; Scc(int n){ N = n; G = vector<vector<int>>(n, vector<int>()); G_inv = vector<vector<int>>(n, vector<int>()); used = vector<bool>(n, false); idx = vector<int>(n); } void add_edge(int from, int to){ G[from].push_back(to); G_inv[to].push_back(from); } vector<vector<int>> scc(){ vector<vector<int>> ans; for(int i = 0; i < N; i++){ if(!used[i]) dfs1(i); } clear(); int cur = 0; for(int i = vs.size()-1; i >= 0; i--){ if(!used[vs[i]]) { dfs2(vs[i], cur); cur++; ans.push_back(buf); buf.clear(); } } return ans; } private: vector<bool> used; vector<int> vs; vector<int> buf; void clear(){ for(int i = 0; i < N; i++) used[i] = false; } void dfs1(int v){ used[v] = true; for(int i = 0; i < G[v].size(); i++){ if(!used[G[v][i]]) dfs1(G[v][i]); } vs.push_back(v); } void dfs2(int v, int k){ used[v] = true; idx[v] = k; for(int i = 0; i < G_inv[v].size(); i++){ if(!used[G_inv[v][i]]) dfs2(G_inv[v][i], k); } buf.push_back(v); } }; struct edge{ int to; ModInt l; int a; }; ModInt dp_sum[100001]; ModInt dp_cnt[100001]; vector<edge> g[100001]; int main(){ ios::sync_with_stdio(false); cin.tie(0); cout << setprecision(10) << fixed; int n, m; cin >> n >> m; Scc scc(n+1); for(int i = 0; i < m; i++){ int u, v, l, a; cin >> u >> v >> l >> a; scc.add_edge(u, v); g[u].push_back((edge){v, ModInt(l), a}); } auto v = scc.scc(); vector<int> tsort; for(auto u : v){ if(u.size() > 1){ cout << "INF" << endl; return 0; } tsort.push_back(u[0]); } dp_cnt[0] = 1; for(int u : tsort){ for(edge e : g[u]){ dp_cnt[e.to] += dp_cnt[u]*e.a; dp_sum[e.to] += dp_sum[u]*e.a+e.l*dp_cnt[u]*e.a; } } cout << dp_sum[n] << endl; }