#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=1e18+1,min_dist;
ll dist[4][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 (wyn[par][v]<oo)return wyn[par][v];
wyn[par][v]=dist[0][v];
for (auto u : graph[v]){
if (dist[par+2][v]+u.second+dist[(par^1)+2][u.first]==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];
fill(wyn[0],wyn[0]+n+1,oo);
fill(wyn[1],wyn[1]+n+1,oo);
}
int main(){
ios_base::sync_with_stdio(0);
cin.tie(0);
init();
ll ans=dist[0][V];
for (ll i = 1; i<=n; i++){
if (dist[2][i]+dist[3][i]==min_dist)ans=min(ans,min(dfs(i,0),dfs(i,1))+dist[1][i]);
}
cout << ans << '\n';
}
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
210 ms |
20892 KB |
Output is correct |
2 |
Correct |
196 ms |
19480 KB |
Output is correct |
3 |
Correct |
212 ms |
21156 KB |
Output is correct |
4 |
Correct |
186 ms |
20724 KB |
Output is correct |
5 |
Correct |
189 ms |
19500 KB |
Output is correct |
6 |
Correct |
201 ms |
20876 KB |
Output is correct |
7 |
Correct |
271 ms |
19728 KB |
Output is correct |
8 |
Correct |
208 ms |
19652 KB |
Output is correct |
9 |
Correct |
186 ms |
19472 KB |
Output is correct |
10 |
Correct |
196 ms |
23880 KB |
Output is correct |
11 |
Correct |
81 ms |
18164 KB |
Output is correct |
12 |
Correct |
230 ms |
23772 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
262 ms |
20348 KB |
Output is correct |
2 |
Correct |
239 ms |
20172 KB |
Output is correct |
3 |
Correct |
223 ms |
20176 KB |
Output is correct |
4 |
Correct |
250 ms |
21104 KB |
Output is correct |
5 |
Correct |
253 ms |
20188 KB |
Output is correct |
6 |
Correct |
285 ms |
22676 KB |
Output is correct |
7 |
Correct |
221 ms |
22476 KB |
Output is correct |
8 |
Correct |
210 ms |
19588 KB |
Output is correct |
9 |
Correct |
233 ms |
20488 KB |
Output is correct |
10 |
Correct |
217 ms |
20416 KB |
Output is correct |
11 |
Correct |
67 ms |
17748 KB |
Output is correct |
12 |
Correct |
220 ms |
25824 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
7 ms |
8540 KB |
Output is correct |
2 |
Correct |
2 ms |
7260 KB |
Output is correct |
3 |
Correct |
2 ms |
7260 KB |
Output is correct |
4 |
Correct |
11 ms |
10588 KB |
Output is correct |
5 |
Correct |
7 ms |
9052 KB |
Output is correct |
6 |
Correct |
2 ms |
7256 KB |
Output is correct |
7 |
Correct |
2 ms |
7516 KB |
Output is correct |
8 |
Correct |
3 ms |
7588 KB |
Output is correct |
9 |
Correct |
2 ms |
7256 KB |
Output is correct |
10 |
Correct |
8 ms |
8908 KB |
Output is correct |
11 |
Correct |
2 ms |
7344 KB |
Output is correct |
12 |
Correct |
2 ms |
7260 KB |
Output is correct |
13 |
Correct |
2 ms |
7260 KB |
Output is correct |
14 |
Correct |
2 ms |
7336 KB |
Output is correct |
15 |
Correct |
2 ms |
7256 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
210 ms |
20892 KB |
Output is correct |
2 |
Correct |
196 ms |
19480 KB |
Output is correct |
3 |
Correct |
212 ms |
21156 KB |
Output is correct |
4 |
Correct |
186 ms |
20724 KB |
Output is correct |
5 |
Correct |
189 ms |
19500 KB |
Output is correct |
6 |
Correct |
201 ms |
20876 KB |
Output is correct |
7 |
Correct |
271 ms |
19728 KB |
Output is correct |
8 |
Correct |
208 ms |
19652 KB |
Output is correct |
9 |
Correct |
186 ms |
19472 KB |
Output is correct |
10 |
Correct |
196 ms |
23880 KB |
Output is correct |
11 |
Correct |
81 ms |
18164 KB |
Output is correct |
12 |
Correct |
230 ms |
23772 KB |
Output is correct |
13 |
Correct |
262 ms |
20348 KB |
Output is correct |
14 |
Correct |
239 ms |
20172 KB |
Output is correct |
15 |
Correct |
223 ms |
20176 KB |
Output is correct |
16 |
Correct |
250 ms |
21104 KB |
Output is correct |
17 |
Correct |
253 ms |
20188 KB |
Output is correct |
18 |
Correct |
285 ms |
22676 KB |
Output is correct |
19 |
Correct |
221 ms |
22476 KB |
Output is correct |
20 |
Correct |
210 ms |
19588 KB |
Output is correct |
21 |
Correct |
233 ms |
20488 KB |
Output is correct |
22 |
Correct |
217 ms |
20416 KB |
Output is correct |
23 |
Correct |
67 ms |
17748 KB |
Output is correct |
24 |
Correct |
220 ms |
25824 KB |
Output is correct |
25 |
Correct |
7 ms |
8540 KB |
Output is correct |
26 |
Correct |
2 ms |
7260 KB |
Output is correct |
27 |
Correct |
2 ms |
7260 KB |
Output is correct |
28 |
Correct |
11 ms |
10588 KB |
Output is correct |
29 |
Correct |
7 ms |
9052 KB |
Output is correct |
30 |
Correct |
2 ms |
7256 KB |
Output is correct |
31 |
Correct |
2 ms |
7516 KB |
Output is correct |
32 |
Correct |
3 ms |
7588 KB |
Output is correct |
33 |
Correct |
2 ms |
7256 KB |
Output is correct |
34 |
Correct |
8 ms |
8908 KB |
Output is correct |
35 |
Correct |
2 ms |
7344 KB |
Output is correct |
36 |
Correct |
2 ms |
7260 KB |
Output is correct |
37 |
Correct |
2 ms |
7260 KB |
Output is correct |
38 |
Correct |
2 ms |
7336 KB |
Output is correct |
39 |
Correct |
2 ms |
7256 KB |
Output is correct |
40 |
Correct |
175 ms |
24612 KB |
Output is correct |
41 |
Correct |
179 ms |
23772 KB |
Output is correct |
42 |
Correct |
179 ms |
23740 KB |
Output is correct |
43 |
Correct |
69 ms |
18884 KB |
Output is correct |
44 |
Correct |
74 ms |
19232 KB |
Output is correct |
45 |
Correct |
229 ms |
22652 KB |
Output is correct |
46 |
Correct |
170 ms |
22300 KB |
Output is correct |
47 |
Correct |
178 ms |
24456 KB |
Output is correct |
48 |
Correct |
68 ms |
15700 KB |
Output is correct |
49 |
Correct |
164 ms |
24248 KB |
Output is correct |
50 |
Correct |
180 ms |
22696 KB |
Output is correct |
51 |
Correct |
168 ms |
22564 KB |
Output is correct |