#include <bits/stdc++.h>
using namespace std;
#define int long long
const int inf=1e15,N=2e5+10;
struct heap
{
int node;
int len;
bool operator < (const heap&x)const
{
return x.len<len;
}
};
priority_queue<heap> q;
struct Edge
{
int to,next,len;
}edge[N<<1];
int num,head[N],vis[N],n,m,s,t,u,v;
int du[N],dv[N],ds[N],dt[N],f[N],g[N],ans;
void add(int x,int y,int z)
{
edge[++num]=(Edge){y,head[x],z},head[x]=num;
}
void dijk(int st,int *dis)
{
for(int i=1;i<=n;i++)
{
vis[i]=0;
dis[i]=inf;
}
dis[st]=0;
q.push((heap){st,0});
while(q.size())
{
int u=q.top().node;
q.pop();
if(vis[u]) continue;
vis[u]=1;
for(int i=head[u];i;i=edge[i].next)
{
int v=edge[i].to;
if(dis[v]>dis[u]+edge[i].len)
{
dis[v]=dis[u]+edge[i].len;
if(!vis[v]) q.push((heap){v,dis[v]});
}
}
}
}
void dfs(int u)
{
if(vis[u]) return;
vis[u]=1;
f[u]=dv[u],g[u]=du[u];
for(int i=head[u];i;i=edge[i].next)
{
int v=edge[i].to;
if(ds[u]+dt[v]+edge[i].len>ds[t]) continue;
dfs(v);
f[u]=min(f[u],f[v]);
g[u]=min(g[u],g[v]);
}
ans=min(ans,min(f[u]+du[u],g[u]+dv[u]));
}
signed main()
{
cin>>n>>m;
cin>>s>>t>>u>>v;
for(int i=1;i<=m;i++)
{
int x,y,z;
cin>>x>>y>>z;
add(x,y,z),add(y,x,z);
}
dijk(s,ds);
dijk(t,dt);
dijk(u,du);
dijk(v,dv);
ans=du[v];
for(int i=1;i<=n;i++) vis[i]=0;
dfs(s);
cout<<ans;
return 0;
}
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
375 ms |
25732 KB |
Output is correct |
2 |
Correct |
238 ms |
25792 KB |
Output is correct |
3 |
Correct |
259 ms |
29956 KB |
Output is correct |
4 |
Correct |
334 ms |
25760 KB |
Output is correct |
5 |
Correct |
323 ms |
25288 KB |
Output is correct |
6 |
Correct |
247 ms |
26056 KB |
Output is correct |
7 |
Correct |
305 ms |
25636 KB |
Output is correct |
8 |
Correct |
234 ms |
25608 KB |
Output is correct |
9 |
Correct |
324 ms |
26108 KB |
Output is correct |
10 |
Correct |
306 ms |
26096 KB |
Output is correct |
11 |
Correct |
91 ms |
22168 KB |
Output is correct |
12 |
Correct |
360 ms |
25844 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
287 ms |
27524 KB |
Output is correct |
2 |
Correct |
274 ms |
27528 KB |
Output is correct |
3 |
Correct |
258 ms |
27368 KB |
Output is correct |
4 |
Correct |
295 ms |
27176 KB |
Output is correct |
5 |
Correct |
259 ms |
27640 KB |
Output is correct |
6 |
Correct |
312 ms |
29388 KB |
Output is correct |
7 |
Correct |
268 ms |
29640 KB |
Output is correct |
8 |
Correct |
256 ms |
27332 KB |
Output is correct |
9 |
Correct |
305 ms |
27620 KB |
Output is correct |
10 |
Correct |
255 ms |
27104 KB |
Output is correct |
11 |
Correct |
96 ms |
23744 KB |
Output is correct |
12 |
Correct |
263 ms |
30052 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
19 ms |
12376 KB |
Output is correct |
2 |
Correct |
2 ms |
10588 KB |
Output is correct |
3 |
Correct |
2 ms |
10588 KB |
Output is correct |
4 |
Correct |
32 ms |
15300 KB |
Output is correct |
5 |
Correct |
16 ms |
11868 KB |
Output is correct |
6 |
Correct |
2 ms |
10584 KB |
Output is correct |
7 |
Correct |
4 ms |
10840 KB |
Output is correct |
8 |
Correct |
4 ms |
11100 KB |
Output is correct |
9 |
Correct |
3 ms |
10588 KB |
Output is correct |
10 |
Correct |
20 ms |
11976 KB |
Output is correct |
11 |
Correct |
2 ms |
10588 KB |
Output is correct |
12 |
Correct |
2 ms |
10732 KB |
Output is correct |
13 |
Correct |
2 ms |
10588 KB |
Output is correct |
14 |
Correct |
2 ms |
10588 KB |
Output is correct |
15 |
Correct |
3 ms |
10588 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
375 ms |
25732 KB |
Output is correct |
2 |
Correct |
238 ms |
25792 KB |
Output is correct |
3 |
Correct |
259 ms |
29956 KB |
Output is correct |
4 |
Correct |
334 ms |
25760 KB |
Output is correct |
5 |
Correct |
323 ms |
25288 KB |
Output is correct |
6 |
Correct |
247 ms |
26056 KB |
Output is correct |
7 |
Correct |
305 ms |
25636 KB |
Output is correct |
8 |
Correct |
234 ms |
25608 KB |
Output is correct |
9 |
Correct |
324 ms |
26108 KB |
Output is correct |
10 |
Correct |
306 ms |
26096 KB |
Output is correct |
11 |
Correct |
91 ms |
22168 KB |
Output is correct |
12 |
Correct |
360 ms |
25844 KB |
Output is correct |
13 |
Correct |
287 ms |
27524 KB |
Output is correct |
14 |
Correct |
274 ms |
27528 KB |
Output is correct |
15 |
Correct |
258 ms |
27368 KB |
Output is correct |
16 |
Correct |
295 ms |
27176 KB |
Output is correct |
17 |
Correct |
259 ms |
27640 KB |
Output is correct |
18 |
Correct |
312 ms |
29388 KB |
Output is correct |
19 |
Correct |
268 ms |
29640 KB |
Output is correct |
20 |
Correct |
256 ms |
27332 KB |
Output is correct |
21 |
Correct |
305 ms |
27620 KB |
Output is correct |
22 |
Correct |
255 ms |
27104 KB |
Output is correct |
23 |
Correct |
96 ms |
23744 KB |
Output is correct |
24 |
Correct |
263 ms |
30052 KB |
Output is correct |
25 |
Correct |
19 ms |
12376 KB |
Output is correct |
26 |
Correct |
2 ms |
10588 KB |
Output is correct |
27 |
Correct |
2 ms |
10588 KB |
Output is correct |
28 |
Correct |
32 ms |
15300 KB |
Output is correct |
29 |
Correct |
16 ms |
11868 KB |
Output is correct |
30 |
Correct |
2 ms |
10584 KB |
Output is correct |
31 |
Correct |
4 ms |
10840 KB |
Output is correct |
32 |
Correct |
4 ms |
11100 KB |
Output is correct |
33 |
Correct |
3 ms |
10588 KB |
Output is correct |
34 |
Correct |
20 ms |
11976 KB |
Output is correct |
35 |
Correct |
2 ms |
10588 KB |
Output is correct |
36 |
Correct |
2 ms |
10732 KB |
Output is correct |
37 |
Correct |
2 ms |
10588 KB |
Output is correct |
38 |
Correct |
2 ms |
10588 KB |
Output is correct |
39 |
Correct |
3 ms |
10588 KB |
Output is correct |
40 |
Correct |
257 ms |
26560 KB |
Output is correct |
41 |
Correct |
292 ms |
26040 KB |
Output is correct |
42 |
Correct |
259 ms |
26048 KB |
Output is correct |
43 |
Correct |
97 ms |
22864 KB |
Output is correct |
44 |
Correct |
92 ms |
22928 KB |
Output is correct |
45 |
Correct |
266 ms |
24988 KB |
Output is correct |
46 |
Correct |
215 ms |
24704 KB |
Output is correct |
47 |
Correct |
303 ms |
25792 KB |
Output is correct |
48 |
Correct |
90 ms |
20304 KB |
Output is correct |
49 |
Correct |
270 ms |
26368 KB |
Output is correct |
50 |
Correct |
234 ms |
25280 KB |
Output is correct |
51 |
Correct |
276 ms |
25172 KB |
Output is correct |