Submission #547559

#	Time	Username	Problem	Language	Result	Execution time	Memory
547559		tmn2005	Commuter Pass (JOI18_commuter_pass)	C++17	0 / 100	42 ms	4496 KiB

commuter_pass

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

#define int long long

#define NeedForSpeed ios::sync_with_stdio(0), cin.tie(0)
const int N = 1e5 + 12, INF = 1e18;
int n, m, s, f, l, r, x, y, z, res, dis[505][505];

void solve(){
	memset(dis, 63, sizeof dis);
	for(int i=1; i<=n; i++)dis[i][i] = 0;
	cin>>n>>m;
	cin>>s>>f;
	cin>>l>>r;
	while(m--){
		cin>>x>>y>>z;
		dis[x][y] = z;
		dis[y][x] = z;
	}
	
	for(int i=1; i<=n; i++){
		for(int j=1; j<=n; j++){
			for(int k=1; k<=n; k++){
				dis[i][j] = min(dis[i][j], dis[i][k] + dis[k][j]);
			}
		}
	}
	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[r][i] + dis[j][l]);
			}
		}	
	}
	cout<<res<<"\n";
}
main(){
	NeedForSpeed;
	int T = 1;
//	cin >> T;
	while(T--){
		solve();
	}
	return 0;
}

Compilation message (stderr)

commuter_pass.cpp:40:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   40 | main(){
      | ^~~~

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