#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef long double ld;
const int N=2000000+5;
int n;
int m;
int s,d,a,b;
int di[2][N];
vector<int>g[N];
void build(int k,int go)
{
for(int j=0;j<N;j++)
{
di[k][j]=-1;
}
di[k][go]=0;
queue<int>q;
q.push(go);
while(!q.empty())
{
int nod=q.front();
q.pop();
for(auto &nou:g[nod])
{
if(di[k][nou]==-1)
{
di[k][nou]=1+di[k][nod];
q.push(nou);
}
}
}
}
int main()
{
// freopen("input","r",stdin);
// freopen("output","w",stdout);
cin>>n>>m;
cin>>s>>d>>a>>b;
for(int i=1;i<=m;i++)
{
int x,y;
cin>>x>>y;
g[x].push_back(y);
g[y].push_back(x);
}
build(0,s);
build(1,d);
int a1=di[0][a],a2=di[0][b];
int b1=di[1][a],b2=di[1][b];
int x1=b1-a1;
int x2=b2-a2;
int ans;
if(x1!=x2)
{
ans=min(x1,x2);
}
else
{
ans=x1-1;
}
if(ans<-1)
{
ans=-1;
}
cout<<ans<<"\n";
return 0;
}
/**
**/
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
56 ms |
62968 KB |
Output is correct |
| 2 |
Partially correct |
58 ms |
62968 KB |
Partially correct |
| 3 |
Partially correct |
56 ms |
63000 KB |
Partially correct |
| 4 |
Correct |
58 ms |
63012 KB |
Output is correct |
| 5 |
Correct |
57 ms |
63248 KB |
Output is correct |
| 6 |
Partially correct |
56 ms |
63248 KB |
Partially correct |
| 7 |
Partially correct |
58 ms |
63248 KB |
Partially correct |
| 8 |
Correct |
52 ms |
63248 KB |
Output is correct |
| 9 |
Partially correct |
49 ms |
63248 KB |
Partially correct |
| 10 |
Correct |
49 ms |
63248 KB |
Output is correct |
| 11 |
Correct |
50 ms |
63248 KB |
Output is correct |
| 12 |
Correct |
48 ms |
63248 KB |
Output is correct |
| 13 |
Partially correct |
49 ms |
63248 KB |
Partially correct |
| 14 |
Correct |
50 ms |
63248 KB |
Output is correct |
| 15 |
Partially correct |
48 ms |
63248 KB |
Partially correct |
| 16 |
Correct |
48 ms |
63248 KB |
Output is correct |
| 17 |
Correct |
48 ms |
63248 KB |
Output is correct |
| 18 |
Correct |
57 ms |
63248 KB |
Output is correct |
| 19 |
Partially correct |
48 ms |
63248 KB |
Partially correct |
| 20 |
Partially correct |
59 ms |
63248 KB |
Partially correct |
| 21 |
Correct |
49 ms |
63248 KB |
Output is correct |
| 22 |
Partially correct |
59 ms |
63248 KB |
Partially correct |
| 23 |
Partially correct |
49 ms |
63248 KB |
Partially correct |
| 24 |
Correct |
57 ms |
63248 KB |
Output is correct |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Partially correct |
81 ms |
64508 KB |
Partially correct |
| 2 |
Correct |
101 ms |
64996 KB |
Output is correct |
| 3 |
Partially correct |
88 ms |
64996 KB |
Partially correct |
| 4 |
Correct |
100 ms |
65200 KB |
Output is correct |
| 5 |
Correct |
83 ms |
65200 KB |
Output is correct |
| 6 |
Correct |
84 ms |
65200 KB |
Output is correct |
| 7 |
Partially correct |
92 ms |
65200 KB |
Partially correct |
| 8 |
Partially correct |
89 ms |
65200 KB |
Partially correct |
| 9 |
Correct |
117 ms |
65200 KB |
Output is correct |
| 10 |
Partially correct |
381 ms |
69372 KB |
Partially correct |
| 11 |
Correct |
128 ms |
69372 KB |
Output is correct |
| 12 |
Partially correct |
174 ms |
69372 KB |
Partially correct |
| 13 |
Correct |
136 ms |
69372 KB |
Output is correct |
| 14 |
Correct |
140 ms |
69372 KB |
Output is correct |
| 15 |
Partially correct |
172 ms |
69372 KB |
Partially correct |
| 16 |
Correct |
166 ms |
69372 KB |
Output is correct |
| 17 |
Partially correct |
161 ms |
69372 KB |
Partially correct |
| 18 |
Correct |
161 ms |
69372 KB |
Output is correct |
| 19 |
Partially correct |
238 ms |
69372 KB |
Partially correct |
| 20 |
Correct |
414 ms |
70652 KB |
Output is correct |
| 21 |
Correct |
191 ms |
70652 KB |
Output is correct |
| 22 |
Partially correct |
183 ms |
70652 KB |
Partially correct |
| 23 |
Partially correct |
193 ms |
70652 KB |
Partially correct |
| 24 |
Partially correct |
196 ms |
70652 KB |
Partially correct |
| 25 |
Correct |
181 ms |
70652 KB |
Output is correct |
| 26 |
Partially correct |
177 ms |
70652 KB |
Partially correct |
| 27 |
Partially correct |
212 ms |
70652 KB |
Partially correct |
| 28 |
Partially correct |
252 ms |
70652 KB |
Partially correct |
| 29 |
Partially correct |
312 ms |
70652 KB |
Partially correct |
| 30 |
Correct |
486 ms |
71152 KB |
Output is correct |
| 31 |
Correct |
251 ms |
71152 KB |
Output is correct |
| 32 |
Partially correct |
222 ms |
71152 KB |
Partially correct |
| 33 |
Partially correct |
235 ms |
71152 KB |
Partially correct |
| 34 |
Correct |
254 ms |
71152 KB |
Output is correct |
| 35 |
Correct |
246 ms |
71152 KB |
Output is correct |
| 36 |
Correct |
244 ms |
71152 KB |
Output is correct |
| 37 |
Correct |
259 ms |
71152 KB |
Output is correct |
| 38 |
Partially correct |
279 ms |
71152 KB |
Partially correct |
| 39 |
Partially correct |
268 ms |
71152 KB |
Partially correct |
| 40 |
Correct |
443 ms |
71152 KB |
Output is correct |
| 41 |
Partially correct |
605 ms |
73212 KB |
Partially correct |
