#include <bits/stdc++.h>
using namespace std;
#define ll long long
#define pii pair<ll,ll>
vector<pii> graph[100003];
ll n,m,S,T,U,V,oo=1e9+1,min_dist;
ll dist[4][100003];
bool vis[2][100003];
ll wyn[2][100003];
void Dijkstra(ll st, ll par){
fill(dist[par],dist[par]+n+1,oo);
dist[par][st]=0;
priority_queue<pii,vector<pii>,greater<pii>> pq;
pq.push({0,st});
while(pq.size()){
auto [d,v]=pq.top();
pq.pop();
for (auto [u,w] : graph[v]){
if (d+w<dist[par][u]){
dist[par][u]=d+w;
pq.push({d+w,u});
}
}
}
}
ll dfs(ll v, ll par){
if (vis[par][v])return wyn[par][v];
vis[par][v]=true;
wyn[par][v]=dist[par][v];
for (auto u : graph[v]){
if (dist[2][u.first]+u.second+dist[3][v]==min_dist || dist[3][u.first]+u.second+dist[2][v]==min_dist){
wyn[par][v]=min(wyn[par][v],dfs(u.first,par));
}
}
return wyn[par][v];
}
void init(){
cin >> n >> m >> S >> T >> U >> V;
ll a,b,c;
for (ll i = 1; i<=m; i++){
cin >> a >> b >> c;
graph[a].push_back({b,c});
graph[b].push_back({a,c});
}
Dijkstra(U,0);
Dijkstra(V,1);
Dijkstra(S,2);
Dijkstra(T,3);
min_dist=dist[2][T];
}
int main(){
ios_base::sync_with_stdio(0);
cin.tie(0);
init();
ll ans=dist[0][V];
for (ll i = 1; i<=n; i++){
ans=min(ans,dfs(i,0)+dfs(i,1));
}
cout << ans << '\n';
}
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
230 ms |
21992 KB |
Output is correct |
2 |
Correct |
232 ms |
19736 KB |
Output is correct |
3 |
Correct |
253 ms |
20928 KB |
Output is correct |
4 |
Correct |
214 ms |
20804 KB |
Output is correct |
5 |
Correct |
251 ms |
20416 KB |
Output is correct |
6 |
Correct |
201 ms |
21004 KB |
Output is correct |
7 |
Correct |
247 ms |
20812 KB |
Output is correct |
8 |
Correct |
250 ms |
20780 KB |
Output is correct |
9 |
Incorrect |
75 ms |
18044 KB |
Output isn't correct |
10 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
222 ms |
20244 KB |
Output is correct |
2 |
Correct |
240 ms |
23628 KB |
Output is correct |
3 |
Correct |
225 ms |
23508 KB |
Output is correct |
4 |
Correct |
236 ms |
24320 KB |
Output is correct |
5 |
Correct |
262 ms |
23472 KB |
Output is correct |
6 |
Correct |
209 ms |
25488 KB |
Output is correct |
7 |
Correct |
251 ms |
25796 KB |
Output is correct |
8 |
Correct |
218 ms |
23164 KB |
Output is correct |
9 |
Correct |
216 ms |
23500 KB |
Output is correct |
10 |
Correct |
270 ms |
23804 KB |
Output is correct |
11 |
Incorrect |
36 ms |
14936 KB |
Output isn't correct |
12 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
7 ms |
8796 KB |
Output is correct |
2 |
Incorrect |
1 ms |
7516 KB |
Output isn't correct |
3 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
230 ms |
21992 KB |
Output is correct |
2 |
Correct |
232 ms |
19736 KB |
Output is correct |
3 |
Correct |
253 ms |
20928 KB |
Output is correct |
4 |
Correct |
214 ms |
20804 KB |
Output is correct |
5 |
Correct |
251 ms |
20416 KB |
Output is correct |
6 |
Correct |
201 ms |
21004 KB |
Output is correct |
7 |
Correct |
247 ms |
20812 KB |
Output is correct |
8 |
Correct |
250 ms |
20780 KB |
Output is correct |
9 |
Incorrect |
75 ms |
18044 KB |
Output isn't correct |
10 |
Halted |
0 ms |
0 KB |
- |