結果
問題 | No.1364 [Renaming] Road to Cherry from Zelkova |
ユーザー | first_vil |
提出日時 | 2021-01-22 22:23:02 |
言語 | C++17 (gcc 12.3.0 + boost 1.83.0) |
結果 |
AC
|
実行時間 | 267 ms / 2,500 ms |
コード長 | 7,324 bytes |
コンパイル時間 | 2,908 ms |
コンパイル使用メモリ | 229,660 KB |
実行使用メモリ | 24,160 KB |
最終ジャッジ日時 | 2024-06-09 06:32:49 |
合計ジャッジ時間 | 9,654 ms |
ジャッジサーバーID (参考情報) |
judge3 / 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
6,816 KB |
testcase_01 | AC | 2 ms
6,940 KB |
testcase_02 | AC | 2 ms
6,944 KB |
testcase_03 | AC | 2 ms
6,940 KB |
testcase_04 | AC | 2 ms
6,940 KB |
testcase_05 | AC | 2 ms
6,940 KB |
testcase_06 | AC | 2 ms
6,944 KB |
testcase_07 | AC | 2 ms
6,944 KB |
testcase_08 | AC | 9 ms
6,944 KB |
testcase_09 | AC | 5 ms
6,940 KB |
testcase_10 | AC | 8 ms
6,944 KB |
testcase_11 | AC | 8 ms
6,944 KB |
testcase_12 | AC | 9 ms
6,940 KB |
testcase_13 | AC | 134 ms
14,080 KB |
testcase_14 | AC | 176 ms
14,080 KB |
testcase_15 | AC | 197 ms
15,104 KB |
testcase_16 | AC | 129 ms
11,392 KB |
testcase_17 | AC | 66 ms
10,880 KB |
testcase_18 | AC | 267 ms
18,580 KB |
testcase_19 | AC | 255 ms
18,432 KB |
testcase_20 | AC | 247 ms
18,432 KB |
testcase_21 | AC | 243 ms
18,560 KB |
testcase_22 | AC | 253 ms
18,432 KB |
testcase_23 | AC | 39 ms
7,808 KB |
testcase_24 | AC | 29 ms
6,944 KB |
testcase_25 | AC | 104 ms
12,160 KB |
testcase_26 | AC | 175 ms
15,872 KB |
testcase_27 | AC | 100 ms
11,264 KB |
testcase_28 | AC | 72 ms
9,984 KB |
testcase_29 | AC | 96 ms
10,496 KB |
testcase_30 | AC | 75 ms
10,112 KB |
testcase_31 | AC | 53 ms
8,832 KB |
testcase_32 | AC | 66 ms
9,344 KB |
testcase_33 | AC | 162 ms
14,208 KB |
testcase_34 | AC | 159 ms
15,360 KB |
testcase_35 | AC | 178 ms
16,768 KB |
testcase_36 | AC | 174 ms
16,128 KB |
testcase_37 | AC | 66 ms
8,320 KB |
testcase_38 | AC | 92 ms
9,600 KB |
testcase_39 | AC | 92 ms
9,472 KB |
testcase_40 | AC | 91 ms
9,344 KB |
testcase_41 | AC | 92 ms
9,344 KB |
testcase_42 | AC | 92 ms
9,472 KB |
testcase_43 | AC | 66 ms
23,808 KB |
testcase_44 | AC | 53 ms
14,264 KB |
testcase_45 | AC | 61 ms
24,160 KB |
testcase_46 | AC | 10 ms
9,904 KB |
testcase_47 | AC | 2 ms
6,944 KB |
ソースコード
#include <bits/stdc++.h> using namespace std; using ll = long long; using ld = long double; using VI = vector<int>; using VL = vector<ll>; using VS = vector<string>; template<class T> using PQ = priority_queue<T, vector<T>, greater<T>>; #define FOR(i,a,n) for(int i=(a);i<(n);++i) #define eFOR(i,a,n) for(int i=(a);i<=(n);++i) #define rFOR(i,a,n) for(int i=(n)-1;i>=(a);--i) #define erFOR(i,a,n) for(int i=(n);i>=(a);--i) #define SORT(a) sort(a.begin(),a.end()) #define rSORT(a) sort(a.rbegin(),a.rend()) #define fSORT(a,f) sort(a.begin(),a.end(),f) #define all(a) a.begin(),a.end() #define out(y,x) ((y)<0||h<=(y)||(x)<0||w<=(x)) #define tp(a,i) get<i>(a) #ifdef _DEBUG #define line cout << "-----------------------------\n" #define stop system("pause") #define debug(x) print(x) #endif constexpr ll INF = 1000000000; constexpr ll LLINF = 1LL << 60; constexpr ll mod = 1000000007; constexpr ll MOD = 998244353; constexpr ld eps = 1e-10; constexpr ld pi = 3.1415926535897932; template<class T>inline bool chmax(T& a, const T& b) { if (a < b) { a = b; return true; }return false; } template<class T>inline bool chmin(T& a, const T& b) { if (a > b) { a = b; return true; }return false; } inline void init() { cin.tie(nullptr); cout.tie(nullptr); ios::sync_with_stdio(false); cout << fixed << setprecision(15); } template<class T>inline istream& operator>>(istream& is, vector<T>& v) { for (auto& a : v)is >> a; return is; } template<class T, class U>inline istream& operator>>(istream& is, pair<T, U>& p) { is >> p.first >> p.second; return is; } template<class T>inline vector<T> vec(size_t a) { return vector<T>(a); } template<class T>inline vector<T> defvec(T def, size_t a) { return vector<T>(a, def); } template<class T, class... Ts>inline auto vec(size_t a, Ts... ts) { return vector<decltype(vec<T>(ts...))>(a, vec<T>(ts...)); } template<class T, class... Ts>inline auto defvec(T def, size_t a, Ts... ts) { return vector<decltype(defvec<T>(def, ts...))>(a, defvec<T>(def, ts...)); } template<class T>inline void print(const T& a) { cout << a << "\n"; } template<class T, class... Ts>inline void print(const T& a, const Ts&... ts) { cout << a << " "; print(ts...); } template<class T>inline void print(const vector<T>& v) { for (int i = 0; i < v.size(); ++i)cout << v[i] << (i == v.size() - 1 ? "\n" : " "); } template<class T>inline void print(const vector<vector<T>>& v) { for (auto& a : v)print(a); } inline string reversed(const string& s) { string t = s; reverse(all(t)); return t; } template<class T>inline T sum(const vector<T>& a, int l, int r) { return a[r] - (l == 0 ? 0 : a[l - 1]); } template<class T>inline void END(T s) { print(s); exit(0); } void END() { exit(0); } template<int modulo> struct ModInt { int x; ModInt() : x(0) {} ModInt(ll y) : x(y >= 0 ? y % modulo : (modulo - (-y) % modulo) % modulo) {} ModInt& operator+=(const ModInt& p) { if ((x += p.x) >= modulo) x -= modulo; return *this; } ModInt& operator-=(const ModInt& p) { if ((x += modulo - p.x) >= modulo) x -= modulo; return *this; } ModInt& operator*=(const ModInt& p) { x = (int)(1LL * x * p.x % modulo); return *this; } ModInt& operator/=(const ModInt& p) { *this *= p.inverse(); return *this; } ModInt operator-() const { return ModInt(-x); } ModInt operator+(const ModInt& p) const { return ModInt(*this) += p; } ModInt operator-(const ModInt& p) const { return ModInt(*this) -= p; } ModInt operator*(const ModInt& p) const { return ModInt(*this) *= p; } ModInt operator/(const ModInt& p) const { return ModInt(*this) /= p; } bool operator==(const ModInt& p) const { return x == p.x; } bool operator!=(const ModInt& p) const { return x != p.x; } ModInt inverse() const { int a = x, b = modulo, u = 1, v = 0, t; while (b > 0) { t = a / b; a -= t * b; swap(a, b); u -= t * v; swap(u, v); } return ModInt(u); } ModInt pow(ll e) { ll a = 1, p = x; while (e > 0) { if (e % 2 == 0) { p = (p * p) % modulo; e /= 2; } else { a = (a * p) % modulo; e--; } } return ModInt(a); } friend ostream& operator<<(ostream& os, const ModInt<modulo>& p) { return os << p.x; } friend istream& operator>>(istream& is, ModInt<modulo>& a) { ll x; is >> x; a = ModInt<modulo>(x); return (is); } }; using modint = ModInt<mod>; int main() { init(); int n, m; cin >> n >> m; vector<vector<tuple<int, int, int>>> g(n + 1), r(n + 1); FOR(i, 0, m) { int u, v, l, a; cin >> u >> v >> l >> a; g[u].emplace_back(v, l, a); r[v].emplace_back(u, l, a); } vector<bool> used(n + 1); stack<int> st; auto dfs1 = [&](auto&& f, int cur)->void { used[cur] = true; for (auto [to, l, a] : g[cur]) { if (used[to])continue; f(f, to); } st.push(cur); }; FOR(i, 0, n + 1)if (!used[i])dfs1(dfs1, i); int cnt; VI loop(n + 1); auto dfs2 = [&](auto&& f, int cur)->bool { used[cur] = true; ++cnt; for (auto [to, l, a] : r[cur]) { if (used[to])continue; f(f, to); } if (cnt > 1) { loop[cur] = 1; return true; } return false; }; used.assign(n + 1, false); while (!st.empty()) { cnt = 0; dfs2(dfs2, st.top()); st.pop(); } used.assign(n + 1, false); queue<int> bfs; bfs.push(0); while (!bfs.empty()) { int cur = bfs.front(); bfs.pop(); for (auto [to, l, a] : g[cur]) { if (used[to])continue; used[to] = true; bfs.push(to); } } FOR(i, 0, n)loop[i] += used[i]; used.assign(n + 1, false); bfs.push(n); while (!bfs.empty()) { int cur = bfs.front(); bfs.pop(); for (auto [to, l, a] : r[cur]) { if (used[to])continue; used[to] = true; bfs.push(to); } } FOR(i, 0, n)loop[i] += used[i]; VI in(n + 1); FOR(cur, 0, n + 1)for (auto [to, l, a] : g[cur])++in[to]; vector<modint> dp1(n + 1); dp1[0] = 1; FOR(i, 0, n + 1)if (in[i] == 0) { bfs.push(i); } while (!bfs.empty()) { int cur = bfs.front(); bfs.pop(); for (auto [to, l, a] : g[cur]) { dp1[to] += dp1[cur] * a; if (--in[to] == 0)bfs.push(to); } } in.assign(n + 1, 0); FOR(cur, 0, n + 1)for (auto [to, l, a] : r[cur])++in[to]; vector<modint> dp2(n + 1); dp2[n] = 1; FOR(i, 0, n + 1)if (in[i] == 0) { bfs.push(i); } while (!bfs.empty()) { int cur = bfs.front(); bfs.pop(); for (auto [to, l, a] : r[cur]) { dp2[to] += dp2[cur] * a; if (--in[to] == 0)bfs.push(to); } } if (*max_element(all(loop)) >= 3)END("INF"); modint ans = 0; FOR(i, 0, n + 1)for (auto [to, l, a] : g[i])ans += dp1[i] * dp2[to] * l * a; print(ans); return 0; }