#include<bits/stdc++.h>
using namespace std;
int dif[1000005];
int n;
bool notdone()
{
for(int i=0; i<n; i++)
if(dif[i]>1)
return 1;
return 0;
}
signed main()
{
cin>>n;
int a,b;
for(int i=0; i<n; i++)
{
cin>>a>>b;
dif[i]=a-b;
}
while(notdone())
{
for(int i=0; i<n; i++)
if(dif[i]>0)
dif[(i+1)%n]+=dif[i]/2, dif[i]%=2;
}
for(int i=0; i<n; i++)
{
if(dif[i]!=0)
{
cout<<"No";
return 0;
}
}
cout<<"Yes";
return 0;
}
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
0 ms |
212 KB |
Output is correct |
2 |
Correct |
0 ms |
212 KB |
Output is correct |
3 |
Correct |
1 ms |
212 KB |
Output is correct |
4 |
Correct |
1 ms |
312 KB |
Output is correct |
5 |
Correct |
1 ms |
212 KB |
Output is correct |
6 |
Correct |
1 ms |
308 KB |
Output is correct |
7 |
Correct |
1 ms |
316 KB |
Output is correct |
8 |
Incorrect |
1 ms |
212 KB |
Output isn't correct |
9 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
0 ms |
212 KB |
Output is correct |
2 |
Correct |
0 ms |
212 KB |
Output is correct |
3 |
Correct |
1 ms |
212 KB |
Output is correct |
4 |
Correct |
1 ms |
312 KB |
Output is correct |
5 |
Correct |
1 ms |
212 KB |
Output is correct |
6 |
Correct |
1 ms |
308 KB |
Output is correct |
7 |
Correct |
1 ms |
316 KB |
Output is correct |
8 |
Incorrect |
1 ms |
212 KB |
Output isn't correct |
9 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
0 ms |
212 KB |
Output is correct |
2 |
Correct |
0 ms |
212 KB |
Output is correct |
3 |
Correct |
1 ms |
212 KB |
Output is correct |
4 |
Correct |
1 ms |
312 KB |
Output is correct |
5 |
Correct |
1 ms |
212 KB |
Output is correct |
6 |
Correct |
1 ms |
308 KB |
Output is correct |
7 |
Correct |
1 ms |
316 KB |
Output is correct |
8 |
Incorrect |
1 ms |
212 KB |
Output isn't correct |
9 |
Halted |
0 ms |
0 KB |
- |