#include <bits/stdc++.h>
using namespace std;
int main()
{
ios::sync_with_stdio(false);
cin.tie(0);
int n,m,s,d,a,b;
cin >> n >> m >> s >> d >> a >> b;
vector<vector<int> > graph(n+1,vector<int>());
for(int i = 0; i < m; i++) {
int x,y;
cin >> x >> y;
graph[x].push_back(y);
graph[y].push_back(x);
}
vector<bool> wass(n+1,false);
vector<int> dists(n+1,0);
vector<bool> wasd(n+1,false);
vector<int> distd(n+1,0);
wass[s] = true;
queue<int> q;
q.push(s);
while(!q.empty()) {
int v = q.front();
q.pop();
for(int u : graph[v]) {
if(!wass[u]) {
wass[u] = true;
q.push(u);
dists[u] = dists[v]+1;
}
}
}
wasd[d] = true;
q.push(d);
while(!q.empty()) {
int v = q.front();
q.pop();
for(int u : graph[v]) {
if(!wasd[u]) {
wasd[u] = true;
q.push(u);
distd[u] = distd[v]+1;
}
}
}
cout << max(min(distd[a]-dists[a],distd[b]-dists[b]),-1);
return 0;
}
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
2 ms |
376 KB |
Output is correct |
| 2 |
Correct |
3 ms |
452 KB |
Output is correct |
| 3 |
Correct |
3 ms |
532 KB |
Output is correct |
| 4 |
Incorrect |
3 ms |
532 KB |
Output isn't correct |
| 5 |
Incorrect |
4 ms |
636 KB |
Output isn't correct |
| 6 |
Correct |
1 ms |
660 KB |
Output is correct |
| 7 |
Correct |
3 ms |
660 KB |
Output is correct |
| 8 |
Incorrect |
2 ms |
660 KB |
Output isn't correct |
| 9 |
Correct |
4 ms |
660 KB |
Output is correct |
| 10 |
Correct |
4 ms |
660 KB |
Output is correct |
| 11 |
Correct |
3 ms |
660 KB |
Output is correct |
| 12 |
Incorrect |
4 ms |
660 KB |
Output isn't correct |
| 13 |
Correct |
3 ms |
660 KB |
Output is correct |
| 14 |
Incorrect |
3 ms |
660 KB |
Output isn't correct |
| 15 |
Correct |
3 ms |
660 KB |
Output is correct |
| 16 |
Incorrect |
3 ms |
660 KB |
Output isn't correct |
| 17 |
Incorrect |
3 ms |
724 KB |
Output isn't correct |
| 18 |
Incorrect |
3 ms |
724 KB |
Output isn't correct |
| 19 |
Correct |
3 ms |
724 KB |
Output is correct |
| 20 |
Correct |
3 ms |
760 KB |
Output is correct |
| 21 |
Correct |
2 ms |
760 KB |
Output is correct |
| 22 |
Correct |
4 ms |
760 KB |
Output is correct |
| 23 |
Correct |
4 ms |
760 KB |
Output is correct |
| 24 |
Incorrect |
5 ms |
760 KB |
Output isn't correct |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
33 ms |
3180 KB |
Output is correct |
| 2 |
Incorrect |
58 ms |
4452 KB |
Output isn't correct |
| 3 |
Correct |
34 ms |
4452 KB |
Output is correct |
| 4 |
Incorrect |
79 ms |
4460 KB |
Output isn't correct |
| 5 |
Correct |
42 ms |
4460 KB |
Output is correct |
| 6 |
Correct |
45 ms |
4460 KB |
Output is correct |
| 7 |
Correct |
36 ms |
4460 KB |
Output is correct |
| 8 |
Correct |
48 ms |
4460 KB |
Output is correct |
| 9 |
Incorrect |
74 ms |
4460 KB |
Output isn't correct |
| 10 |
Correct |
252 ms |
8684 KB |
Output is correct |
| 11 |
Incorrect |
108 ms |
8684 KB |
Output isn't correct |
| 12 |
Correct |
145 ms |
8684 KB |
Output is correct |
| 13 |
Incorrect |
90 ms |
8684 KB |
Output isn't correct |
| 14 |
Correct |
72 ms |
8684 KB |
Output is correct |
| 15 |
Correct |
102 ms |
8684 KB |
Output is correct |
| 16 |
Correct |
140 ms |
8684 KB |
Output is correct |
| 17 |
Correct |
131 ms |
8684 KB |
Output is correct |
| 18 |
Incorrect |
106 ms |
8684 KB |
Output isn't correct |
| 19 |
Correct |
156 ms |
8684 KB |
Output is correct |
| 20 |
Incorrect |
309 ms |
11632 KB |
Output isn't correct |
| 21 |
Incorrect |
195 ms |
11632 KB |
Output isn't correct |
| 22 |
Correct |
147 ms |
11632 KB |
Output is correct |
| 23 |
Correct |
127 ms |
11632 KB |
Output is correct |
| 24 |
Correct |
179 ms |
11632 KB |
Output is correct |
| 25 |
Incorrect |
178 ms |
11632 KB |
Output isn't correct |
| 26 |
Correct |
148 ms |
11632 KB |
Output is correct |
| 27 |
Correct |
219 ms |
11632 KB |
Output is correct |
| 28 |
Correct |
219 ms |
11632 KB |
Output is correct |
| 29 |
Correct |
245 ms |
11632 KB |
Output is correct |
| 30 |
Incorrect |
328 ms |
12700 KB |
Output isn't correct |
| 31 |
Incorrect |
186 ms |
12700 KB |
Output isn't correct |
| 32 |
Correct |
153 ms |
12700 KB |
Output is correct |
| 33 |
Correct |
142 ms |
12700 KB |
Output is correct |
| 34 |
Incorrect |
174 ms |
12700 KB |
Output isn't correct |
| 35 |
Incorrect |
173 ms |
12700 KB |
Output isn't correct |
| 36 |
Incorrect |
229 ms |
12700 KB |
Output isn't correct |
| 37 |
Correct |
209 ms |
12804 KB |
Output is correct |
| 38 |
Correct |
238 ms |
12804 KB |
Output is correct |
| 39 |
Correct |
210 ms |
12804 KB |
Output is correct |
| 40 |
Incorrect |
280 ms |
14060 KB |
Output isn't correct |
| 41 |
Correct |
356 ms |
15980 KB |
Output is correct |
