oj.uz

답안 #1018615

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
1018615 2024-07-10T07:29:42 Z vjudge1 Autobus (COCI22_autobus) C++17
30 / 70
 1000 ms 4188 KB 
#include <bits/stdc++.h>
#define fast cin.tie(0)->sync_with_stdio(0);
#define int long long
#define inf ((int)1e18)
using namespace std;
const int N = 71;
vector <pair<int, int> > adj[N];
vector <vector<vector<int> > > ans(N);

int32_t main(){
	fast
	int n, m;
	cin >> n >> m;
	for(int i = 0; i < m; i++) {
		int a, b, w;
		cin >> a >> b >> w;
		adj[a].push_back({b, w});
	}
	int K, Q;
	cin >> K >> Q;
	K = min(K, n - 1);
	auto dijkstra = [&](int st) {
		// cout << st << ":\n";
		vector <vector<int> > dist(N, vector<int>(N, inf));
		vector <vector<bool> > vis(N, vector<bool>(N));
		dist[st][0] = 0;
		priority_queue <array<int, 3>, vector<array<int,3> >, greater<array<int, 3>> > pq; // {k, -v, node}
		pq.push({0, 0, st});
		while(!pq.empty()) {
			auto [k, v, node] = pq.top();
			pq.pop();
			if(k > K or vis[node][k]) continue;
			// cout << node << " " << k << " " << v << "\n";
			dist[node][k] = v;
			vis[node][k] = 1;
			for(auto [to, w]:adj[node]) {
				if(dist[to][k + 1] == inf) {
					pq.push({k + 1, v + w, to});
				}
			}
		}
		ans[st] = dist;
	};
	for(int i = 1; i <= n; i++) {
		adj[i].push_back({i, 0});
	}
	for(int i = 1; i <= n; i++) {
		dijkstra(i);
	}
	while(Q--) {
		int a, b;
		cin >> a >> b;
		cout << (ans[a][b][K] == inf ? -1 : ans[a][b][K]) << "\n";
	} 
}

Subtask #1
15.0 / 15.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 600 KB Output is correct
2 Correct 1 ms 604 KB Output is correct
3 Correct 1 ms 604 KB Output is correct
4 Correct 1 ms 604 KB Output is correct
5 Correct 0 ms 604 KB Output is correct
6 Correct 1 ms 604 KB Output is correct

Subtask #2
15.0 / 15.0

# 결과 실행 시간 메모리 Grader output
1 Correct 4 ms 3420 KB Output is correct
2 Correct 5 ms 3420 KB Output is correct
3 Correct 9 ms 3356 KB Output is correct
4 Correct 16 ms 3420 KB Output is correct
5 Correct 29 ms 3656 KB Output is correct
6 Correct 101 ms 4136 KB Output is correct
7 Correct 158 ms 4188 KB Output is correct

Subtask #3
0 / 25.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 600 KB Output is correct
2 Correct 1 ms 604 KB Output is correct
3 Correct 1 ms 604 KB Output is correct
4 Correct 1 ms 604 KB Output is correct
5 Correct 0 ms 604 KB Output is correct
6 Correct 1 ms 604 KB Output is correct
7 Correct 92 ms 3528 KB Output is correct
8 Correct 258 ms 3412 KB Output is correct
9 Correct 42 ms 3644 KB Output is correct
10 Correct 415 ms 3532 KB Output is correct
11 Correct 523 ms 4148 KB Output is correct
12 Execution timed out 1012 ms 2380 KB Time limit exceeded
13 Halted 0 ms 0 KB -

Subtask #4
0 / 15.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 600 KB Output is correct
2 Correct 1 ms 604 KB Output is correct
3 Correct 1 ms 604 KB Output is correct
4 Correct 1 ms 604 KB Output is correct
5 Correct 0 ms 604 KB Output is correct
6 Correct 1 ms 604 KB Output is correct
7 Correct 4 ms 3420 KB Output is correct
8 Correct 5 ms 3420 KB Output is correct
9 Correct 9 ms 3356 KB Output is correct
10 Correct 16 ms 3420 KB Output is correct
11 Correct 29 ms 3656 KB Output is correct
12 Correct 101 ms 4136 KB Output is correct
13 Correct 158 ms 4188 KB Output is correct
14 Correct 92 ms 3528 KB Output is correct
15 Correct 258 ms 3412 KB Output is correct
16 Correct 42 ms 3644 KB Output is correct
17 Correct 415 ms 3532 KB Output is correct
18 Correct 523 ms 4148 KB Output is correct
19 Execution timed out 1012 ms 2380 KB Time limit exceeded
20 Halted 0 ms 0 KB -