#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;
}
}
}
if(dists[a] == dists[b] && distd[a] == distd[b]) {
cout << max(min(distd[a]-dists[a],distd[b]-dists[b])-1,-1);
} else {
cout << max(min(distd[a]-dists[a],distd[b]-dists[b]),-1);
}
return 0;
}
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
2 ms |
380 KB |
Output is correct |
| 2 |
Correct |
2 ms |
460 KB |
Output is correct |
| 3 |
Partially correct |
2 ms |
460 KB |
Partially correct |
| 4 |
Correct |
3 ms |
460 KB |
Output is correct |
| 5 |
Correct |
2 ms |
460 KB |
Output is correct |
| 6 |
Partially correct |
2 ms |
472 KB |
Partially correct |
| 7 |
Partially correct |
2 ms |
472 KB |
Partially correct |
| 8 |
Correct |
3 ms |
520 KB |
Output is correct |
| 9 |
Partially correct |
3 ms |
596 KB |
Partially correct |
| 10 |
Correct |
3 ms |
596 KB |
Output is correct |
| 11 |
Correct |
2 ms |
704 KB |
Output is correct |
| 12 |
Correct |
3 ms |
704 KB |
Output is correct |
| 13 |
Partially correct |
2 ms |
704 KB |
Partially correct |
| 14 |
Correct |
2 ms |
704 KB |
Output is correct |
| 15 |
Partially correct |
2 ms |
704 KB |
Partially correct |
| 16 |
Correct |
3 ms |
704 KB |
Output is correct |
| 17 |
Correct |
2 ms |
704 KB |
Output is correct |
| 18 |
Correct |
3 ms |
704 KB |
Output is correct |
| 19 |
Partially correct |
2 ms |
704 KB |
Partially correct |
| 20 |
Partially correct |
2 ms |
704 KB |
Partially correct |
| 21 |
Correct |
2 ms |
704 KB |
Output is correct |
| 22 |
Partially correct |
3 ms |
704 KB |
Partially correct |
| 23 |
Partially correct |
3 ms |
704 KB |
Partially correct |
| 24 |
Correct |
3 ms |
704 KB |
Output is correct |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Partially correct |
27 ms |
3156 KB |
Partially correct |
| 2 |
Correct |
63 ms |
4316 KB |
Output is correct |
| 3 |
Partially correct |
39 ms |
4316 KB |
Partially correct |
| 4 |
Correct |
44 ms |
4444 KB |
Output is correct |
| 5 |
Correct |
52 ms |
4444 KB |
Output is correct |
| 6 |
Correct |
29 ms |
4444 KB |
Output is correct |
| 7 |
Partially correct |
43 ms |
4444 KB |
Partially correct |
| 8 |
Partially correct |
63 ms |
4444 KB |
Partially correct |
| 9 |
Correct |
66 ms |
4444 KB |
Output is correct |
| 10 |
Partially correct |
262 ms |
8748 KB |
Partially correct |
| 11 |
Correct |
86 ms |
8748 KB |
Output is correct |
| 12 |
Partially correct |
122 ms |
8748 KB |
Partially correct |
| 13 |
Correct |
98 ms |
8748 KB |
Output is correct |
| 14 |
Correct |
80 ms |
8748 KB |
Output is correct |
| 15 |
Partially correct |
113 ms |
8748 KB |
Partially correct |
| 16 |
Correct |
101 ms |
8748 KB |
Output is correct |
| 17 |
Partially correct |
78 ms |
8748 KB |
Partially correct |
| 18 |
Correct |
141 ms |
8748 KB |
Output is correct |
| 19 |
Partially correct |
147 ms |
8748 KB |
Partially correct |
| 20 |
Correct |
258 ms |
11692 KB |
Output is correct |
| 21 |
Correct |
167 ms |
11692 KB |
Output is correct |
| 22 |
Partially correct |
153 ms |
11692 KB |
Partially correct |
| 23 |
Correct |
123 ms |
11692 KB |
Output is correct |
| 24 |
Partially correct |
122 ms |
11692 KB |
Partially correct |
| 25 |
Correct |
121 ms |
11692 KB |
Output is correct |
| 26 |
Correct |
109 ms |
11692 KB |
Output is correct |
| 27 |
Partially correct |
160 ms |
11692 KB |
Partially correct |
| 28 |
Partially correct |
151 ms |
11692 KB |
Partially correct |
| 29 |
Partially correct |
195 ms |
11692 KB |
Partially correct |
| 30 |
Correct |
295 ms |
12716 KB |
Output is correct |
| 31 |
Correct |
242 ms |
12716 KB |
Output is correct |
| 32 |
Partially correct |
158 ms |
12716 KB |
Partially correct |
| 33 |
Correct |
150 ms |
12716 KB |
Output is correct |
| 34 |
Correct |
193 ms |
12716 KB |
Output is correct |
| 35 |
Correct |
183 ms |
12716 KB |
Output is correct |
| 36 |
Correct |
170 ms |
12716 KB |
Output is correct |
| 37 |
Correct |
249 ms |
12908 KB |
Output is correct |
| 38 |
Partially correct |
215 ms |
12908 KB |
Partially correct |
| 39 |
Partially correct |
206 ms |
12908 KB |
Partially correct |
| 40 |
Correct |
343 ms |
14060 KB |
Output is correct |
| 41 |
Partially correct |
459 ms |
15980 KB |
Partially correct |
