제출 #897236

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
897236		SalihSahin	Autobus (COCI22_autobus)	C++14	0 / 70	54 ms	1824 KiB

Main

#include<bits/stdc++.h>
#define pb push_back
#define mp make_pair
using namespace std;
 
const int mod = 1e9 + 7;
const int N = 3e5 + 5;
 
int main(){
    int n, m;
    cin>>n>>m;
    vector<vector<int> > edge(n, vector<int>(n, -1));
    for(int i = 0; i < m; i++){
        int u, v, w;
        cin>>u>>v>>w;
        if(edge[u-1][v-1] == -1) edge[u-1][v-1] = w;
        else edge[u-1][v-1] = min(edge[u-1][v-1], w);
    }

    int k, q;
    cin>>k>>q;
    int dis[n][n][n];
    for(int i = 0; i < n; i++){
        for(int j = 0; j < n; j++){
            for(int l = 1; l < n; l++){
                dis[i][j][l] = mod;
            }
            dis[i][j][0] = 0;
        }
    }

    for(int i = 0; i < n; i++){
        for(int j = 0; j < n; j++){
            if(edge[i][j] != -1) dis[i][j][1] = edge[i][j];
            if(i == j) dis[i][j][1] = 0;
        }
    }

    for(int asama = 2; asama < n; asama++){
        for(int l = 0; l < n; l++){
            for(int i = 0; i < n; i++){
                for(int j = 0; j < n; j++){
                    dis[i][j][asama] = min(dis[i][j][asama], dis[i][l][asama-1] + dis[l][j][asama-1]);
                }
            }
        }
    }

    while(q--){
        int c, d;
        cin>>c>>d;
        c--, d--;

        if(dis[c][d][min(k, n-1)] == mod) cout<<-1<<endl;
        else cout<<dis[c][d][min(k, n-1)]<<endl;
    }
    return 0;
}

• Subtask 1: 0 / 15
• Subtask 2: 0 / 15
• Subtask 3: 0 / 25
• Subtask 4: 0 / 15