Submission #547565

#	Time	Username	Problem	Language	Result	Execution time	Memory
547565		tmn2005	Commuter Pass (JOI18_commuter_pass)	C++17	24 / 100	40 ms	1876 KiB

commuter_pass

#include<bits/stdc++.h>
using namespace std;

#define int long long

const int N = 305;
int dis[N][N];

signed main(){
	ios::sync_with_stdio(0), cin.tie(0);	
	int n, m, s, f, l, r;
	cin>>n>>m;
	cin>>s>>f;
	cin>>l>>r;
	
	memset(dis, 63, sizeof dis);
	for(int i=1; i<=n; i++)dis[i][i] = 0;
	while(m--){
		int x, y, z;
		cin>>x>>y>>z;
		dis[x][y] = min(dis[x][y], z);
		dis[y][x] = min(dis[y][x], z);
	}
	for(int k=1; k<=n; k++){
		for(int i=1; i<=n; i++){
			for(int j=1; j<=n; j++){
				dis[i][j] = min(dis[i][j], dis[i][k] + dis[k][j]);
			}
		}
	}
	int res = dis[l][r];
	for(int i=1; i<=n; i++){
		for(int j=1; j<=n; j++){
			if(dis[s][i] + dis[i][j] + dis[j][f] == dis[s][f]){
				res = min(res, dis[l][i] + dis[j][r]);
				res = min(res, dis[l][j] + dis[i][r]);
			}
		}	
	}
	cout<<res<<"\n";
}

• Subtask 1: 0 / 16
• Subtask 2: 0 / 15
• Subtask 3: 24 / 24
• Subtask 4: 0 / 45