제출 #632508

#제출 시각아이디문제언어결과실행 시간메모리
632508mansur여행하는 상인 (APIO17_merchant)C++17
12 / 100
19 ms6996 KiB
//#pragma GCC target( "sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx,avx,tune=native") //#pragma GCC optimize("Ofast,no-stack-protector,unroll-loops,fast-math,O3") #include<bits/stdc++.h> using namespace std; #define all(a) a.begin(), a.end() #define rall(a) a.rbegin(), a.rend() #define sz(a) a.size() #define pb push_back #define vt vector #define s second #define f first #define nl '\n' using ll = long long; using pii = pair<int, int>; vt<pii> dir = {{1, 0}, {-1, 0}, {0, 1}, {0, -1}}; const int N = 1e5 + 5, mod = 1e9 + 7; const int inf = 2e9; double eps = 1e-6; bool fl = 0; vt<pii> g[N], g2[N]; void slv() { int n, m, k; cin >> n >> m >> k; int b[n + 1][k + 1]; int sl[n + 1][k + 1]; for (int i = 1; i <= n; i++) { for (int j = 1; j <= k; j++) { cin >> b[i][j] >> sl[i][j]; } } while (m--) { int u, v, w; cin >> u >> v >> w; g[u].pb({v, w}); g2[v].pb({u, w}); } set<pii> s; vt<int> d1(n + 1, inf); d1[1] = 0; s.insert({0, 1}); while (!s.empty()) { int u = (*s.begin()).s; s.erase(s.begin()); for (pii to: g[u]) { if (d1[to.f] > d1[u] + to.s) { s.erase({d1[to.f], to.f}); d1[to.f] = d1[u] + to.s; s.insert({d1[to.f], to.f}); } } } vt<int> d2(n + 1, inf); d2[1] = 0; s.insert({0, 1}); while (!s.empty()) { int u = (*s.begin()).s; s.erase(s.begin()); for (pii to: g2[u]) { if (d2[to.f] > d2[u] + to.s) { s.erase({d2[to.f], to.f}); d2[to.f] = d2[u] + to.s; s.insert({d2[to.f], to.f}); } } } int ans = 0; for (int i = 1; i <= k; i++) { if (b[1][i] == -1) continue; for (int j = 2; j <= n; j++) { if (sl[j][i] <= b[1][i]) continue; ans = max(ans, (sl[j][i] - b[1][i]) / (d1[j] + d2[j])); } } cout << ans; } int main() { //freopen("codes.in", "r", stdin); //freopen("codes.out", "w", stdout); ios_base::sync_with_stdio(NULL); cin.tie(NULL); int tp = 1; if (fl) cin >> tp; while (tp--) { slv(); } }
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