#include <bits/stdc++.h>
using namespace std;
#define int long long
const int N = (int) 1e6 + 7;
int n;
int a[N];
int b[N];
signed main() {
ios::sync_with_stdio(0); cin.tie(0);
//freopen ("input", "r", stdin);
cin >> n;
for (int i = 0; i < n; i++) {
cin >> a[i] >> b[i];
}
for (int j = 1; j <= 10000; j++) {
bool change = false;
for (int i = 0; i < n; i++) {
int j = (i + 1) % n;
int extra = a[i] - b[i];
if (extra >= 2) {
change = true;
a[i] -= (extra + 1) / 2 * 2;
a[j] += (extra + 1) / 2;
}
}
if (!change) {
// break;
}
}
for (int i = 0; i < n; i++) {
if (a[i] != b[i]) {
cout << "No\n";
exit(0);
}
}
cout << "Yes\n";
return 0;
}
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
204 KB |
Output is correct |
2 |
Correct |
1 ms |
204 KB |
Output is correct |
3 |
Correct |
1 ms |
204 KB |
Output is correct |
4 |
Correct |
1 ms |
204 KB |
Output is correct |
5 |
Correct |
0 ms |
204 KB |
Output is correct |
6 |
Correct |
1 ms |
320 KB |
Output is correct |
7 |
Correct |
0 ms |
332 KB |
Output is correct |
8 |
Incorrect |
0 ms |
204 KB |
Output isn't correct |
9 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
204 KB |
Output is correct |
2 |
Correct |
1 ms |
204 KB |
Output is correct |
3 |
Correct |
1 ms |
204 KB |
Output is correct |
4 |
Correct |
1 ms |
204 KB |
Output is correct |
5 |
Correct |
0 ms |
204 KB |
Output is correct |
6 |
Correct |
1 ms |
320 KB |
Output is correct |
7 |
Correct |
0 ms |
332 KB |
Output is correct |
8 |
Incorrect |
0 ms |
204 KB |
Output isn't correct |
9 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
204 KB |
Output is correct |
2 |
Correct |
1 ms |
204 KB |
Output is correct |
3 |
Correct |
1 ms |
204 KB |
Output is correct |
4 |
Correct |
1 ms |
204 KB |
Output is correct |
5 |
Correct |
0 ms |
204 KB |
Output is correct |
6 |
Correct |
1 ms |
320 KB |
Output is correct |
7 |
Correct |
0 ms |
332 KB |
Output is correct |
8 |
Incorrect |
0 ms |
204 KB |
Output isn't correct |
9 |
Halted |
0 ms |
0 KB |
- |