結果
問題 | No.3013 ハチマキ買い星人 |
ユーザー |
👑 |
提出日時 | 2025-01-19 04:08:02 |
言語 | C++17 (gcc 13.3.0 + boost 1.87.0) |
結果 |
RE
|
実行時間 | - |
コード長 | 4,419 bytes |
コンパイル時間 | 8,831 ms |
コンパイル使用メモリ | 270,900 KB |
実行使用メモリ | 8,068 KB |
最終ジャッジ日時 | 2025-01-25 21:59:46 |
合計ジャッジ時間 | 12,264 ms |
ジャッジサーバーID (参考情報) |
judge7 / judge9 |
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ファイルパターン | 結果 |
---|---|
sample | AC * 1 |
other | AC * 2 RE * 43 |
ソースコード
#include<bits/stdc++.h>#include<atcoder/all>#define rep(i,n) for(int i=0;i<n;i++)using namespace std;using namespace atcoder;typedef long long ll;typedef vector<int> vi;typedef vector<long long> vl;typedef vector<vector<int>> vvi;typedef vector<vector<long long>> vvl;typedef long double ld;typedef pair<int, int> P;template <int m> ostream& operator<<(ostream& os, const static_modint<m>& a) {os << a.val(); return os;}template <int m> ostream& operator<<(ostream& os, const dynamic_modint<m>& a) {os << a.val(); return os;}template <int m> istream& operator>>(istream& is, static_modint<m>& a) {long long x; is >> x; a = x; return is;}template <int m> istream& operator>>(istream& is, dynamic_modint<m>& a) {long long x; is >> x; a = x; return is;}template<typename T> istream& operator>>(istream& is, vector<T>& v){int n = v.size(); assert(n > 0); rep(i, n) is >> v[i]; return is;}template<typename U, typename T> ostream& operator<<(ostream& os, const pair<U, T>& p){os << p.first << ' ' << p.second; return os;}template<typename T> ostream& operator<<(ostream& os, const vector<T>& v){int n = v.size(); rep(i, n) os << v[i] << (i == n - 1 ? "\n" : " "); returnos;}template<typename T> ostream& operator<<(ostream& os, const vector<vector<T>>& v){int n = v.size(); rep(i, n) os << v[i] << (i == n - 1 ? "\n" : "");return os;}template<typename T> ostream& operator<<(ostream& os, const set<T>& se){for(T x : se) os << x << " "; os << "\n"; return os;}template<typename T> ostream& operator<<(ostream& os, const unordered_set<T>& se){for(T x : se) os << x << " "; os << "\n"; return os;}template<typename S, auto op, auto e> ostream& operator<<(ostream& os, const atcoder::segtree<S, op, e>& seg){int n = seg.max_right(0, [](S){returntrue;}); rep(i, n) os << seg.get(i) << (i == n - 1 ? "\n" : " "); return os;}template<typename S, auto op, auto e, typename F, auto mapping, auto composition, auto id> ostream& operator<<(ostream& os, const atcoder::lazy_segtree<S, op, e, F, mapping, composition, id>& seg){int n = seg.max_right(0, [](S){return true;}); rep(i, n) os << seg.get(i) << (i == n- 1 ? "\n" : " "); return os;}template<typename T> void chmin(T& a, T b){a = min(a, b);}template<typename T> void chmax(T& a, T b){a = max(a, b);}const long long INF = 1001001001001001;using S = long long;S _INF(INF);S _ZERO(0LL);using F = long long;S apply(F f, S x){return f + x;}template<typename S, typename F>struct Dijkstra{struct Edge{int from, to;F cost;Edge(int from, int to, F cost) : from(from), to(to), cost(cost) {};};int n, m;vector<bool> initialized;vector<Edge> E;vector<vector<int>> G;map<int, vector<S>> dist;map<int, vector<int>> idx;Dijkstra(int _n) : n(_n), m(0), initialized(n, false), G(n){}void add_edge(int from, int to, F cost){Edge e(from, to, cost);E.push_back(e);G[from].emplace_back(m);m++;}void calc(int s){initialized[s] = true;dist[s] = vector<S>(n, _INF);idx[s] = vector<int>(n, -1);priority_queue<tuple<S, int, int>, vector<tuple<S, int, int>>, greater<tuple<S, int, int>>> pq;pq.emplace(_ZERO, s, -1);while(pq.size()){auto [dist_from, from, index] = pq.top(); pq.pop();if(dist[s][from] <= dist_from) continue;dist[s][from] = dist_from;idx[s][from] = index;for(int index : G[from]){int to = E[index].to;S dist_to = apply(E[index].cost, dist_from);if(dist[s][to] <= dist_to) continue;pq.emplace(dist_to, to, index);}}}int farthest(int s){if(!initialized[s]) calc(s);int idx = 0;rep(i, n) if(dist[s][i] > dist[s][idx]) idx = i;return idx;}S get_dist(int s, int t){if(!initialized[s]) calc(s);return dist[s][t];}vector<int> restore(int s, int t){if(!initialized[s]) calc(s);if(dist[s][t] == _INF) return vector<int>(0);vector<int> res;while(idx[s][t] != -1){auto e = E[idx[s][t]];res.push_back(idx[s][t]);t = e.from;}reverse(res.begin(), res.end());return res;}};// 3:57 Start// 4:02 Start Implementationint main(){int n, m, p, y;cin >> n >> m >> p >> y;Dijkstra<long long, long long> graph(n);rep(_, m){int a, b, c;cin >> a >> b >> c;a--; b--;graph.add_edge(a, b, c);}long long ans = 0;rep(_, p){int d, e;cin >> d >> e;d--;long long tmp = (y - graph.get_dist(0, d)) / e;chmax(ans, tmp);}cout << ans << "\n";return 0;}