Submission #535129

#	Time	Username	Problem	Language	Result	Execution time	Memory
535129		amunduzbaev	Commuter Pass (JOI18_commuter_pass)	C++17	24 / 100	48 ms	1912 KiB

commuter_pass

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

#define ar array
#define int long long

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

signed main(){
	ios::sync_with_stdio(0); cin.tie(0);
	
	int n, m; cin>>n>>m;
	int s, t, u, v; cin>>s>>t>>u>>v;
	memset(d, 63, sizeof d);
	for(int i=1;i<=n;i++) d[i][i] = 0;
	for(int i=0;i<m;i++){
		int a, b, c; cin>>a>>b>>c;
		d[a][b] = min(d[a][b], c);
		d[b][a] = min(d[b][a], c);
	}
	
	for(int k=1;k<=n;k++){
		for(int i=1;i<=n;i++){
			for(int j=1;j<=n;j++){
				d[i][j] = min(d[i][j], d[i][k] + d[k][j]);
			}
		}
	}
	
	int res = d[u][v];
	//~ cout<<d[s][1]<<" "<<d[1][1]<<" "<<d[1][t]<<"\n";
	for(int i=1;i<=n;i++){
		for(int j=1;j<=n;j++){
			if(d[s][i] + d[i][j] + d[j][t] == d[s][t]){
				res = min(res, d[u][i] + d[j][v]);
				res = min(res, d[u][j] + d[i][v]);
			}
		}
	}
	
	cout<<res<<"\n";
}

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