#include <bits/stdc++.h>
using namespace std;
#define pb push_back
const int maxn = 2e5;
int n, m;
vector<int> graph[1 + maxn];
int g, s, a, b;
vector<int> dg, ds, da, db;
vector<int> bfs(int start) {
vector<int> res(1 + n, -1);
res[start] = 0;
queue<int> q;
q.push(start);
while(!q.empty()) {
int cur = q.front();
q.pop();
for(int nei : graph[cur]) {
if(res[nei] == -1) {
res[nei] = res[cur] + 1;
q.push(nei);
}
}
}
return res;
}
void solve() {
cin >> n >> m;
cin >> g >> s >> a >> b;
for(int i = 0; i < m; i++) {
int x, y;
cin >> x >> y;
graph[x].pb(y);
graph[y].pb(x);
}
dg = bfs(g), ds = bfs(s), da = bfs(a), db = bfs(b);
if((da[s] < da[g]) || (db[s] < db[g])) {
cout << "-1\n";
return;
}
int add_a = da[s] - 1 - da[g], add_b = db[s] - 1 - db[g];
bool extra_case = true;
if(add_a != add_b) {
add_a++, add_b++;
extra_case = false;
}
int to_add = min(add_a, add_b);
if(!extra_case) {
cout << to_add << "\n";
return;
}
cout << 0 << "\n";
}
signed main() {
ios_base::sync_with_stdio(false);
cin.tie(nullptr);
solve();
return 0;
}
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
2 ms |
4948 KB |
Output is correct |
| 2 |
Incorrect |
2 ms |
4948 KB |
Output isn't correct |
| 3 |
Correct |
2 ms |
4948 KB |
Output is correct |
| 4 |
Correct |
2 ms |
4948 KB |
Output is correct |
| 5 |
Correct |
2 ms |
4948 KB |
Output is correct |
| 6 |
Incorrect |
2 ms |
4948 KB |
Output isn't correct |
| 7 |
Incorrect |
2 ms |
4948 KB |
Output isn't correct |
| 8 |
Correct |
2 ms |
4948 KB |
Output is correct |
| 9 |
Incorrect |
2 ms |
4948 KB |
Output isn't correct |
| 10 |
Correct |
2 ms |
4948 KB |
Output is correct |
| 11 |
Correct |
2 ms |
4948 KB |
Output is correct |
| 12 |
Incorrect |
2 ms |
4948 KB |
Output isn't correct |
| 13 |
Incorrect |
2 ms |
4948 KB |
Output isn't correct |
| 14 |
Incorrect |
2 ms |
4948 KB |
Output isn't correct |
| 15 |
Incorrect |
2 ms |
4948 KB |
Output isn't correct |
| 16 |
Incorrect |
2 ms |
4948 KB |
Output isn't correct |
| 17 |
Incorrect |
2 ms |
4948 KB |
Output isn't correct |
| 18 |
Incorrect |
2 ms |
4948 KB |
Output isn't correct |
| 19 |
Incorrect |
2 ms |
4948 KB |
Output isn't correct |
| 20 |
Incorrect |
2 ms |
5024 KB |
Output isn't correct |
| 21 |
Correct |
2 ms |
4948 KB |
Output is correct |
| 22 |
Incorrect |
2 ms |
4948 KB |
Output isn't correct |
| 23 |
Incorrect |
3 ms |
4948 KB |
Output isn't correct |
| 24 |
Correct |
2 ms |
4948 KB |
Output is correct |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Incorrect |
14 ms |
6912 KB |
Output isn't correct |
| 2 |
Incorrect |
18 ms |
7764 KB |
Output isn't correct |
| 3 |
Incorrect |
15 ms |
7008 KB |
Output isn't correct |
| 4 |
Incorrect |
18 ms |
7824 KB |
Output isn't correct |
| 5 |
Correct |
14 ms |
6740 KB |
Output is correct |
| 6 |
Correct |
14 ms |
7124 KB |
Output is correct |
| 7 |
Incorrect |
19 ms |
7312 KB |
Output isn't correct |
| 8 |
Incorrect |
16 ms |
7320 KB |
Output isn't correct |
| 9 |
Incorrect |
24 ms |
7764 KB |
Output isn't correct |
| 10 |
Incorrect |
90 ms |
12156 KB |
Output isn't correct |
| 11 |
Incorrect |
29 ms |
9164 KB |
Output isn't correct |
| 12 |
Incorrect |
43 ms |
10264 KB |
Output isn't correct |
| 13 |
Incorrect |
33 ms |
9612 KB |
Output isn't correct |
| 14 |
Correct |
26 ms |
8824 KB |
Output is correct |
| 15 |
Incorrect |
35 ms |
10444 KB |
Output isn't correct |
| 16 |
Correct |
38 ms |
10700 KB |
Output is correct |
| 17 |
Incorrect |
31 ms |
10068 KB |
Output isn't correct |
| 18 |
Incorrect |
37 ms |
10096 KB |
Output isn't correct |
| 19 |
Incorrect |
59 ms |
11260 KB |
Output isn't correct |
| 20 |
Incorrect |
113 ms |
14088 KB |
Output isn't correct |
| 21 |
Incorrect |
51 ms |
12492 KB |
Output isn't correct |
| 22 |
Incorrect |
64 ms |
11544 KB |
Output isn't correct |
| 23 |
Incorrect |
46 ms |
12376 KB |
Output isn't correct |
| 24 |
Incorrect |
45 ms |
12364 KB |
Output isn't correct |
| 25 |
Incorrect |
45 ms |
11976 KB |
Output isn't correct |
| 26 |
Incorrect |
41 ms |
11592 KB |
Output isn't correct |
| 27 |
Incorrect |
47 ms |
12492 KB |
Output isn't correct |
| 28 |
Incorrect |
54 ms |
12516 KB |
Output isn't correct |
| 29 |
Incorrect |
77 ms |
12908 KB |
Output isn't correct |
| 30 |
Incorrect |
121 ms |
14868 KB |
Output isn't correct |
| 31 |
Incorrect |
57 ms |
13640 KB |
Output isn't correct |
| 32 |
Incorrect |
60 ms |
12428 KB |
Output isn't correct |
| 33 |
Incorrect |
52 ms |
12640 KB |
Output isn't correct |
| 34 |
Incorrect |
59 ms |
13048 KB |
Output isn't correct |
| 35 |
Incorrect |
50 ms |
12744 KB |
Output isn't correct |
| 36 |
Incorrect |
49 ms |
12996 KB |
Output isn't correct |
| 37 |
Correct |
63 ms |
14108 KB |
Output is correct |
| 38 |
Incorrect |
60 ms |
13888 KB |
Output isn't correct |
| 39 |
Incorrect |
65 ms |
13896 KB |
Output isn't correct |
| 40 |
Incorrect |
115 ms |
15492 KB |
Output isn't correct |
| 41 |
Incorrect |
162 ms |
17452 KB |
Output isn't correct |
