結果
問題 | No.3013 ハチマキ買い星人 |
ユーザー |
|
提出日時 | 2025-01-25 18:41:48 |
言語 | C++23 (gcc 13.3.0 + boost 1.87.0) |
結果 |
WA
|
実行時間 | - |
コード長 | 3,081 bytes |
コンパイル時間 | 8,221 ms |
コンパイル使用メモリ | 437,644 KB |
実行使用メモリ | 14,852 KB |
最終ジャッジ日時 | 2025-01-26 00:01:04 |
合計ジャッジ時間 | 18,911 ms |
ジャッジサーバーID (参考情報) |
judge13 / judge4 |
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ファイルパターン | 結果 |
---|---|
sample | AC * 1 |
other | AC * 31 WA * 14 |
ソースコード
#include <bits/stdc++.h>#include <atcoder/all>using namespace std;using ll = long long;using ull = unsigned long long;using mint = atcoder::modint998244353;using maxt = atcoder::modint1000000007;//ここからグラフ探索系using Graph = vector<vector<int>>;struct edge {int to;ll cost;};using Cost_Graph = vector<vector<edge>>;using D_heap = priority_queue<pair<ll, int>, vector<pair<ll, int>>, greater<pair<ll, int>>>;//グラフ探索系終わりvector<ll> Era(int N) {vector<ll> ans(0, 0);vector<bool> isprime(N + 1, true);isprime.at(1) = false;for(int i = 1; i <= N; i++) {if(isprime.at(i)) {ans.push_back(i);for(int j = 2 * i; j <= N; j += i) {isprime.at(j) = false;}}}return ans;}ll POW(ll a, int N) {if(N == 0) {return 1;}if(N == 1) {return a;}ll ans = POW(a, N / 2) * POW(a, N / 2);if(N % 2 == 1) {ans *= a;}return ans;}ll GCD(ll a, ll b) {if(b == 0) {return a;}int r = a % b;return GCD(b, r);}ll LCM(ll a, ll b) {return (a * b) / GCD(a, b);}vector<ll> zaatu(vector<ll> a) {vector<ll> b(0, 0);b = a;sort(b.begin(), b.end());b.erase(unique(b.begin(), b.end()), b.end());int s = b.size();for(ll &o : a) {int l = 0, r = s, c = 0;while(r - l > 1) {c = (l + r) / 2;if(b.at(c) <= o) {l = c;}else {r = c;}}o = r;}return a;}struct FenwickTree {int N;vector<ll> a;FenwickTree(int n) {N = n;a.assign(N + 1, 0);}void add(int i, ll x) {for(int j = i; j <= N; j += (j & -j)) {a.at(j) += x;}}ll sum(int i, int j) {return sum_sub(j) - sum_sub(i - 1);}ll sum_sub(int i) {if(i == 0) {return 0;}ll s = 0;for(int j = i; j > 0; j -= (j & -j)) {s += a.at(j);}return s;}};ll tento(vector<ll> a) {int s = a.size();FenwickTree tmp(s);ll ans = 0;for(int i = 0; i < s; i++) {ans += i - tmp.sum_sub(a.at(i));tmp.add(a.at(i), 1);}return ans;}//__builtin_popcount//next_permutation//srand((unsigned)time(NULL))//cout << fixed << setprecision(Digit);//library endvector<ll> dist(200010, -1LL);int main() {int N, M, P;ll Y;cin >> N >> M >> P >> Y;Cost_Graph G(N + 1, vector<edge>(0));for(int i = 0; i < M; i++) {int now;edge e;cin >> now >> e.to >> e.cost;G.at(now).push_back(e);}D_heap que;que.push(make_pair(0LL, 1));while(!que.empty()) {pair<ll, int> v = que.top();que.pop();if(dist.at(v.second) != -1LL) {continue;}dist.at(v.second) = v.first;for(edge next_v : G.at(v.second)) {if(dist.at(next_v.to) == -1LL) {que.push(make_pair(v.first + next_v.cost, next_v.to));}}}ll ans = 0;for(int i = 0; i < P; i++) {int D;ll E;cin >> D >> E;if(dist.at(D) != -1LL && dist.at(D) <= Y) {ans = max(ans, (Y - dist.at(D)) / E);}}cout << ans << endl;}