| # |
Submission time |
Handle |
Problem |
Language |
Result |
Execution time |
Memory |
| 43398 |
2018-03-15T19:59:24 Z |
XmtosX |
007 (CEOI14_007) |
C++14 |
|
565 ms |
104324 KB |
#include <bits/stdc++.h>
using namespace std;
int n,m,st1,st2,a,b;
vector <int> v[300005];
int bs (int x,int y)
{
queue<int> q;
int lvl[300005]={0};
lvl[x]=1;
q.push(x);
while (!q.empty())
{
int node=q.front();
q.pop();
if (node==y)
return lvl[y];
for (int i=0;i<v[node].size();i++)
{
if (!lvl[v[node][i]])
{
lvl[v[node][i]]=lvl[node]+1;
q.push(v[node][i]);
}
}
}
}
int main()
{
cin >>n>>m>>st1>>st2>>a>>b;
for (int i=0;i<m;i++)
{
int x,y;
cin >>x>>y;
v[x].push_back(y);
v[y].push_back(x);
}
int ans1= (bs(st2,a));
int ans2=(bs(st2,b));
int x;
if (ans2==ans1)
x=max(bs(st1,a),bs(st1,b));
else if (ans1<ans2)
x=bs(st1,a);
else
x=bs(st1,b);
ans1=min(ans1,ans2);
if (x>ans1)
cout <<-1;
else
cout<<ans1-x;
return 0;
}
Compilation message
007.cpp: In function 'int bs(int, int)':
007.cpp:17:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
for (int i=0;i<v[node].size();i++)
^
007.cpp:26:1: warning: control reaches end of non-void function [-Wreturn-type]
}
^
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
9 ms |
8568 KB |
Output is correct |
| 2 |
Correct |
8 ms |
8568 KB |
Output is correct |
| 3 |
Correct |
8 ms |
8656 KB |
Output is correct |
| 4 |
Incorrect |
8 ms |
8692 KB |
Output isn't correct |
| 5 |
Incorrect |
8 ms |
8716 KB |
Output isn't correct |
| 6 |
Correct |
8 ms |
8720 KB |
Output is correct |
| 7 |
Correct |
9 ms |
8812 KB |
Output is correct |
| 8 |
Incorrect |
8 ms |
8820 KB |
Output isn't correct |
| 9 |
Correct |
8 ms |
8840 KB |
Output is correct |
| 10 |
Correct |
8 ms |
8840 KB |
Output is correct |
| 11 |
Correct |
8 ms |
8848 KB |
Output is correct |
| 12 |
Incorrect |
8 ms |
8852 KB |
Output isn't correct |
| 13 |
Correct |
11 ms |
8856 KB |
Output is correct |
| 14 |
Incorrect |
8 ms |
8948 KB |
Output isn't correct |
| 15 |
Correct |
8 ms |
8972 KB |
Output is correct |
| 16 |
Incorrect |
8 ms |
8976 KB |
Output isn't correct |
| 17 |
Incorrect |
8 ms |
9000 KB |
Output isn't correct |
| 18 |
Incorrect |
8 ms |
9024 KB |
Output isn't correct |
| 19 |
Correct |
9 ms |
9044 KB |
Output is correct |
| 20 |
Correct |
8 ms |
9056 KB |
Output is correct |
| 21 |
Correct |
8 ms |
9064 KB |
Output is correct |
| 22 |
Correct |
8 ms |
9072 KB |
Output is correct |
| 23 |
Correct |
8 ms |
9080 KB |
Output is correct |
| 24 |
Incorrect |
9 ms |
9088 KB |
Output isn't correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
51 ms |
10764 KB |
Output is correct |
| 2 |
Incorrect |
71 ms |
12012 KB |
Output isn't correct |
| 3 |
Correct |
66 ms |
12048 KB |
Output is correct |
| 4 |
Incorrect |
68 ms |
13336 KB |
Output isn't correct |
| 5 |
Correct |
49 ms |
13336 KB |
Output is correct |
| 6 |
Correct |
50 ms |
13888 KB |
Output is correct |
| 7 |
Correct |
61 ms |
14572 KB |
Output is correct |
| 8 |
Correct |
62 ms |
15080 KB |
Output is correct |
| 9 |
Incorrect |
91 ms |
16540 KB |
Output isn't correct |
| 10 |
Correct |
383 ms |
25952 KB |
Output is correct |
| 11 |
Incorrect |
109 ms |
25952 KB |
Output isn't correct |
| 12 |
Correct |
143 ms |
25952 KB |
Output is correct |
| 13 |
Incorrect |
113 ms |
26616 KB |
Output isn't correct |
| 14 |
Correct |
94 ms |
27008 KB |
Output is correct |
| 15 |
Correct |
136 ms |
29480 KB |
Output is correct |
| 16 |
Correct |
140 ms |
31264 KB |
Output is correct |
| 17 |
Correct |
120 ms |
32016 KB |
Output is correct |
| 18 |
Incorrect |
115 ms |
33420 KB |
Output isn't correct |
| 19 |
Correct |
232 ms |
37044 KB |
Output is correct |
| 20 |
Incorrect |
454 ms |
45360 KB |
Output isn't correct |
| 21 |
Incorrect |
190 ms |
45360 KB |
Output isn't correct |
| 22 |
Correct |
169 ms |
46236 KB |
Output is correct |
| 23 |
Correct |
180 ms |
48624 KB |
Output is correct |
| 24 |
Correct |
183 ms |
50512 KB |
Output is correct |
| 25 |
Incorrect |
176 ms |
52164 KB |
Output isn't correct |
| 26 |
Correct |
155 ms |
53648 KB |
Output is correct |
| 27 |
Correct |
188 ms |
56300 KB |
Output is correct |
| 28 |
Correct |
177 ms |
58244 KB |
Output is correct |
| 29 |
Correct |
291 ms |
62444 KB |
Output is correct |
| 30 |
Incorrect |
449 ms |
70272 KB |
Output isn't correct |
| 31 |
Incorrect |
219 ms |
70612 KB |
Output isn't correct |
| 32 |
Correct |
217 ms |
71692 KB |
Output is correct |
| 33 |
Correct |
190 ms |
73972 KB |
Output is correct |
| 34 |
Incorrect |
241 ms |
76372 KB |
Output isn't correct |
| 35 |
Incorrect |
184 ms |
78264 KB |
Output isn't correct |
| 36 |
Incorrect |
187 ms |
80528 KB |
Output isn't correct |
| 37 |
Correct |
224 ms |
83724 KB |
Output is correct |
| 38 |
Correct |
216 ms |
86044 KB |
Output is correct |
| 39 |
Correct |
249 ms |
88688 KB |
Output is correct |
| 40 |
Incorrect |
373 ms |
94688 KB |
Output isn't correct |
| 41 |
Correct |
565 ms |
104324 KB |
Output is correct |
