oj.uz

답안 #698507

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
698507 2023-02-13T16:28:23 Z Gital Autobus (COCI22_autobus) C++11
0 / 70
 13 ms 392 KB 
#include<bits/stdc++.h>
using namespace std;
#define endl '\n'
typedef long long ll;
int dp[75];
vector<pair<int,int>> v[75];
bool checked[75];
int n,m;
priority_queue<pair<pair<int,int>,int>,vector<pair<pair<int,int>,int>>,greater<pair<pair<int,int>,int>>> pq;
int k,q;
int main () {
    ios::sync_with_stdio(0); cin.tie(0);
    cin >> n >> m;
    for(int i = 0; i < m; i++) {
        int a,b,c; cin >> a >> b >> c;
        v[a].push_back({c,b});
    }
    cin >> k >> q;
    for(int j = 0; j < q; j++) {
        int st,en; cin >> st >> en;
        for(int i = 0; i < 75; i++) {
            checked[i] = false;
            dp[i] = -1;
        }
        dp[st] = 0;
        pq.push({{0,st},0});
        while(!pq.empty()) {
            int a = pq.top().first.first;
            int b = pq.top().first.second;
            int cnt = pq.top().second;
            pq.pop();
            if(checked[b]) continue;
            checked[b] = true;
            if(cnt >= k) continue;
            for(int i = 0; i < v[b].size(); i++) {
                if(dp[v[b][i].second] == -1 || dp[v[b][i].second] > a + v[b][i].first) {
                    dp[v[b][i].second] = max(0,a + v[b][i].first);
                    pq.push({{dp[v[b][i].second],v[b][i].second},cnt+1});
                }
            }
        }
        cout << dp[en] << endl;
    }
    return 0;
}

Compilation message

Main.cpp: In function 'int main()':
Main.cpp:35:30: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   35 |             for(int i = 0; i < v[b].size(); i++) {
      |                            ~~^~~~~~~~~~~~~

Subtask #1
0 / 15.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 320 KB Output is correct
5 Incorrect 1 ms 324 KB Output isn't correct
6 Halted 0 ms 0 KB -

Subtask #2
0 / 15.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 344 KB Output is correct
2 Incorrect 13 ms 392 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #3
0 / 25.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 320 KB Output is correct
5 Incorrect 1 ms 324 KB Output isn't correct
6 Halted 0 ms 0 KB -

Subtask #4
0 / 15.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 320 KB Output is correct
5 Incorrect 1 ms 324 KB Output isn't correct
6 Halted 0 ms 0 KB -