#include<bits/stdc++.h>
using namespace std;
#define int long long
int n;
int a[1000005];
int b[1000005];
bool running()
{
for(int i=0;i<n;i++)
if((a[i]-b[i])>=2)
return 1;
return 0;
}
signed main()
{
cin>>n;
for(int i=0;i<n;i++)
{
cin>>a[i]>>b[i];
}
while(running())
{
for(int i=0;i<n;i++)
{
if((a[i]-b[i])>=2)
{
int x = (a[i]-b[i])/2;
a[i] -= 2*x;
a[(i+1)%n] += x;
}
}
}
bool good=1;
for(int i=0;i<n;i++)
if(a[i]!=b[i])
good=0;
if(good)
cout<<"Yes";
else
cout<<"No";
return 0;
}
# |
결과 |
실행 시간 |
메모리 |
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 |
0 ms |
212 KB |
Output is correct |
5 |
Correct |
0 ms |
212 KB |
Output is correct |
6 |
Correct |
0 ms |
212 KB |
Output is correct |
7 |
Correct |
1 ms |
212 KB |
Output is correct |
8 |
Incorrect |
0 ms |
212 KB |
Output isn't correct |
9 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
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 |
0 ms |
212 KB |
Output is correct |
5 |
Correct |
0 ms |
212 KB |
Output is correct |
6 |
Correct |
0 ms |
212 KB |
Output is correct |
7 |
Correct |
1 ms |
212 KB |
Output is correct |
8 |
Incorrect |
0 ms |
212 KB |
Output isn't correct |
9 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
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 |
0 ms |
212 KB |
Output is correct |
5 |
Correct |
0 ms |
212 KB |
Output is correct |
6 |
Correct |
0 ms |
212 KB |
Output is correct |
7 |
Correct |
1 ms |
212 KB |
Output is correct |
8 |
Incorrect |
0 ms |
212 KB |
Output isn't correct |
9 |
Halted |
0 ms |
0 KB |
- |