#include <bits/stdc++.h>
using namespace std;
int main()
{
int N; cin>>N;
for(int i = 1; i <= N; i++)
{
int a, b; cin>>a>>b;
}
if(N%4==0)cout<<N/2<<"\n";
else cout<<"-1\n";
}
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
0 ms |
212 KB |
Output is correct |
2 |
Correct |
1 ms |
212 KB |
Output is correct |
3 |
Correct |
0 ms |
212 KB |
Output is correct |
4 |
Correct |
1 ms |
212 KB |
Output is correct |
5 |
Correct |
68 ms |
1424 KB |
Output is correct |
6 |
Correct |
51 ms |
1420 KB |
Output is correct |
7 |
Correct |
60 ms |
1436 KB |
Output is correct |
8 |
Correct |
52 ms |
1412 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Incorrect |
1 ms |
212 KB |
Output isn't correct |
2 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Incorrect |
1 ms |
212 KB |
Output isn't correct |
2 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
0 ms |
212 KB |
Output is correct |
2 |
Correct |
1 ms |
212 KB |
Output is correct |
3 |
Correct |
0 ms |
212 KB |
Output is correct |
4 |
Correct |
1 ms |
212 KB |
Output is correct |
5 |
Correct |
68 ms |
1424 KB |
Output is correct |
6 |
Correct |
51 ms |
1420 KB |
Output is correct |
7 |
Correct |
60 ms |
1436 KB |
Output is correct |
8 |
Correct |
52 ms |
1412 KB |
Output is correct |
9 |
Incorrect |
1 ms |
212 KB |
Output isn't correct |
10 |
Halted |
0 ms |
0 KB |
- |