#include <bits/stdc++.h>
using namespace std;
using ll = long long;
const int maxn=1e5+5;
int n,m,a[4];
bool vis[maxn];
ll dp[maxn];
ll dis[4][maxn],ans;
vector<int>v;
vector<pair<int,int>>E[maxn];
void f(int cp,int sg){
for(int i = 1;i <= n;i++) dp[i] = 1e9;
for(auto i : v){
dp[i] = dis[cp][i];
for(auto j : E[i]){
if(dis[0][j.first] + j.second == dis[0][i] and j.second + dis[0][j.first] + dis[1][i] == dis[0][a[1]]) dp[i] = min(dp[i],dp[j.first]);
}
// if(dp[i] + dis[sg][i] == 0) cout<<i<<' '<<dis[0][i]<<' '<<dis[1][i]<<' '<<dis[2][i]<<' '<<dis[3][i]<<'\n';
ans = min(ans,dp[i] + dis[sg][i]);
}
}
int main(){
ios::sync_with_stdio(false);
cin.tie(0);
cin >> n >> m >> a[0] >> a[1] >> a[2] >> a[3];
for(int i = 1;i <= m;i++){
int x,y,w; cin >> x >> y >> w;
E[x].push_back({y,w});
E[y].push_back({x,w});
}
for(int i = 0;i < 4;i++){
for(int j = 1;j <= n;j++) dis[i][j] = 1e18,vis[j] = 0;
dis[i][a[i]] = 0;
priority_queue<pair<ll,int>>q;
q.push({0,a[i]});
while(!q.empty()){
int x = q.top().second; q.pop();
if(vis[x]) continue;
if(i == 0) v.push_back(x);
vis[x] = 1;
for(auto j : E[x]){
if(dis[i][j.first] > dis[i][x] + j.second){
dis[i][j.first] = dis[i][x] + j.second;
q.push({-dis[i][j.first],j.first});
}
}
}
}
ans = dis[2][a[3]];
// for(auto i : v) cout<<i<<' ';
// cout<<'\n';
// cout<<ans<<'\n';
f(2,3);
f(3,2);
cout<<ans;
}
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
278 ms |
20228 KB |
Output is correct |
2 |
Correct |
308 ms |
18736 KB |
Output is correct |
3 |
Correct |
293 ms |
19048 KB |
Output is correct |
4 |
Correct |
260 ms |
19388 KB |
Output is correct |
5 |
Correct |
304 ms |
18472 KB |
Output is correct |
6 |
Correct |
315 ms |
20376 KB |
Output is correct |
7 |
Correct |
309 ms |
18660 KB |
Output is correct |
8 |
Correct |
265 ms |
18672 KB |
Output is correct |
9 |
Correct |
307 ms |
19508 KB |
Output is correct |
10 |
Correct |
239 ms |
19412 KB |
Output is correct |
11 |
Correct |
122 ms |
12420 KB |
Output is correct |
12 |
Correct |
280 ms |
19368 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
303 ms |
19004 KB |
Output is correct |
2 |
Correct |
279 ms |
18636 KB |
Output is correct |
3 |
Correct |
307 ms |
18772 KB |
Output is correct |
4 |
Correct |
271 ms |
18672 KB |
Output is correct |
5 |
Correct |
292 ms |
18700 KB |
Output is correct |
6 |
Correct |
257 ms |
18916 KB |
Output is correct |
7 |
Correct |
299 ms |
18700 KB |
Output is correct |
8 |
Correct |
291 ms |
18684 KB |
Output is correct |
9 |
Correct |
319 ms |
18660 KB |
Output is correct |
10 |
Correct |
283 ms |
18568 KB |
Output is correct |
11 |
Correct |
117 ms |
12412 KB |
Output is correct |
12 |
Correct |
249 ms |
19036 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
9 ms |
3780 KB |
Output is correct |
2 |
Correct |
2 ms |
2636 KB |
Output is correct |
3 |
Correct |
2 ms |
2680 KB |
Output is correct |
4 |
Correct |
14 ms |
4804 KB |
Output is correct |
5 |
Correct |
7 ms |
3712 KB |
Output is correct |
6 |
Correct |
2 ms |
2764 KB |
Output is correct |
7 |
Correct |
3 ms |
2704 KB |
Output is correct |
8 |
Correct |
4 ms |
2812 KB |
Output is correct |
9 |
Correct |
2 ms |
2764 KB |
Output is correct |
10 |
Correct |
8 ms |
3740 KB |
Output is correct |
11 |
Correct |
2 ms |
2676 KB |
Output is correct |
12 |
Correct |
2 ms |
2636 KB |
Output is correct |
13 |
Correct |
3 ms |
2636 KB |
Output is correct |
14 |
Correct |
2 ms |
2764 KB |
Output is correct |
15 |
Correct |
2 ms |
2688 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
278 ms |
20228 KB |
Output is correct |
2 |
Correct |
308 ms |
18736 KB |
Output is correct |
3 |
Correct |
293 ms |
19048 KB |
Output is correct |
4 |
Correct |
260 ms |
19388 KB |
Output is correct |
5 |
Correct |
304 ms |
18472 KB |
Output is correct |
6 |
Correct |
315 ms |
20376 KB |
Output is correct |
7 |
Correct |
309 ms |
18660 KB |
Output is correct |
8 |
Correct |
265 ms |
18672 KB |
Output is correct |
9 |
Correct |
307 ms |
19508 KB |
Output is correct |
10 |
Correct |
239 ms |
19412 KB |
Output is correct |
11 |
Correct |
122 ms |
12420 KB |
Output is correct |
12 |
Correct |
280 ms |
19368 KB |
Output is correct |
13 |
Correct |
303 ms |
19004 KB |
Output is correct |
14 |
Correct |
279 ms |
18636 KB |
Output is correct |
15 |
Correct |
307 ms |
18772 KB |
Output is correct |
16 |
Correct |
271 ms |
18672 KB |
Output is correct |
17 |
Correct |
292 ms |
18700 KB |
Output is correct |
18 |
Correct |
257 ms |
18916 KB |
Output is correct |
19 |
Correct |
299 ms |
18700 KB |
Output is correct |
20 |
Correct |
291 ms |
18684 KB |
Output is correct |
21 |
Correct |
319 ms |
18660 KB |
Output is correct |
22 |
Correct |
283 ms |
18568 KB |
Output is correct |
23 |
Correct |
117 ms |
12412 KB |
Output is correct |
24 |
Correct |
249 ms |
19036 KB |
Output is correct |
25 |
Correct |
9 ms |
3780 KB |
Output is correct |
26 |
Correct |
2 ms |
2636 KB |
Output is correct |
27 |
Correct |
2 ms |
2680 KB |
Output is correct |
28 |
Correct |
14 ms |
4804 KB |
Output is correct |
29 |
Correct |
7 ms |
3712 KB |
Output is correct |
30 |
Correct |
2 ms |
2764 KB |
Output is correct |
31 |
Correct |
3 ms |
2704 KB |
Output is correct |
32 |
Correct |
4 ms |
2812 KB |
Output is correct |
33 |
Correct |
2 ms |
2764 KB |
Output is correct |
34 |
Correct |
8 ms |
3740 KB |
Output is correct |
35 |
Correct |
2 ms |
2676 KB |
Output is correct |
36 |
Correct |
2 ms |
2636 KB |
Output is correct |
37 |
Correct |
3 ms |
2636 KB |
Output is correct |
38 |
Correct |
2 ms |
2764 KB |
Output is correct |
39 |
Correct |
2 ms |
2688 KB |
Output is correct |
40 |
Correct |
255 ms |
20716 KB |
Output is correct |
41 |
Correct |
278 ms |
19432 KB |
Output is correct |
42 |
Correct |
280 ms |
19332 KB |
Output is correct |
43 |
Correct |
92 ms |
12380 KB |
Output is correct |
44 |
Correct |
120 ms |
12568 KB |
Output is correct |
45 |
Correct |
272 ms |
18192 KB |
Output is correct |
46 |
Correct |
226 ms |
18160 KB |
Output is correct |
47 |
Correct |
259 ms |
20140 KB |
Output is correct |
48 |
Correct |
98 ms |
11772 KB |
Output is correct |
49 |
Correct |
211 ms |
20236 KB |
Output is correct |
50 |
Correct |
236 ms |
18384 KB |
Output is correct |
51 |
Correct |
233 ms |
18312 KB |
Output is correct |