#include <bits/stdc++.h>
typedef long long ll;
using namespace std;
const int MAX = 1000007;
ll A[MAX], B[MAX];
int main() {
ios::sync_with_stdio(0); cin.tie(0);
ll N;
cin >> N;
for (int i = 0; i < N; ++i) {
ll a, b;
cin >> a >> b;
A[i] = b - a;
B[i] = a;
}
bool s1 = 0, s2 = 1;
for (int i = 0; i < N; ++i) {
if (B[i] > 1) s1 = 1;
if (A[i] != -1) s2 = 0;
}
if (s1 && s2) {
cout << "Yes";
return 0;
}
if (N <= 30) {
for (int i = 0; i < N; ++i) {
if (0 <= A[i]) continue;
ll init = abs(A[i]), conv = 0;
while (init) {
conv -= init % (1LL << N);
init /= (1LL << N);
}
A[i] = conv;
}
}
for (int t = 0; t < 3; ++t) {
for (int i = 0; i < N; ++i) {
if (A[i] >= 0) continue;
ll z = abs(A[i]) / 2LL;
A[i] += z * 2;
A[(i + 1) % N] -= z;
}
}
for (int i = 0; i < N; ++i) {
if (!A[i]) continue;
cout << "No";
return 0;
}
cout << "Yes";
return 0;
}
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1 ms |
2384 KB |
Output is correct |
2 |
Correct |
1 ms |
2384 KB |
Output is correct |
3 |
Correct |
1 ms |
2384 KB |
Output is correct |
4 |
Correct |
1 ms |
2384 KB |
Output is correct |
5 |
Correct |
1 ms |
2384 KB |
Output is correct |
6 |
Correct |
1 ms |
2556 KB |
Output is correct |
7 |
Correct |
1 ms |
2384 KB |
Output is correct |
8 |
Correct |
1 ms |
2384 KB |
Output is correct |
9 |
Correct |
1 ms |
2384 KB |
Output is correct |
10 |
Correct |
1 ms |
2384 KB |
Output is correct |
11 |
Correct |
1 ms |
2384 KB |
Output is correct |
12 |
Correct |
1 ms |
2384 KB |
Output is correct |
13 |
Correct |
1 ms |
2384 KB |
Output is correct |
14 |
Correct |
1 ms |
2384 KB |
Output is correct |
15 |
Correct |
1 ms |
2384 KB |
Output is correct |
16 |
Correct |
1 ms |
2384 KB |
Output is correct |
17 |
Correct |
1 ms |
2384 KB |
Output is correct |
18 |
Correct |
1 ms |
2384 KB |
Output is correct |
19 |
Correct |
1 ms |
2384 KB |
Output is correct |
20 |
Correct |
1 ms |
2384 KB |
Output is correct |
21 |
Correct |
1 ms |
2388 KB |
Output is correct |
22 |
Correct |
1 ms |
2388 KB |
Output is correct |
23 |
Correct |
1 ms |
2388 KB |
Output is correct |
24 |
Incorrect |
1 ms |
2388 KB |
Output isn't correct |
25 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1 ms |
2384 KB |
Output is correct |
2 |
Correct |
1 ms |
2384 KB |
Output is correct |
3 |
Correct |
1 ms |
2384 KB |
Output is correct |
4 |
Correct |
1 ms |
2384 KB |
Output is correct |
5 |
Correct |
1 ms |
2384 KB |
Output is correct |
6 |
Correct |
1 ms |
2556 KB |
Output is correct |
7 |
Correct |
1 ms |
2384 KB |
Output is correct |
8 |
Correct |
1 ms |
2384 KB |
Output is correct |
9 |
Correct |
1 ms |
2384 KB |
Output is correct |
10 |
Correct |
1 ms |
2384 KB |
Output is correct |
11 |
Correct |
1 ms |
2384 KB |
Output is correct |
12 |
Correct |
1 ms |
2384 KB |
Output is correct |
13 |
Correct |
1 ms |
2384 KB |
Output is correct |
14 |
Correct |
1 ms |
2384 KB |
Output is correct |
15 |
Correct |
1 ms |
2384 KB |
Output is correct |
16 |
Correct |
1 ms |
2384 KB |
Output is correct |
17 |
Correct |
1 ms |
2384 KB |
Output is correct |
18 |
Correct |
1 ms |
2384 KB |
Output is correct |
19 |
Correct |
1 ms |
2384 KB |
Output is correct |
20 |
Correct |
1 ms |
2384 KB |
Output is correct |
21 |
Correct |
1 ms |
2388 KB |
Output is correct |
22 |
Correct |
1 ms |
2388 KB |
Output is correct |
23 |
Correct |
1 ms |
2388 KB |
Output is correct |
24 |
Incorrect |
1 ms |
2388 KB |
Output isn't correct |
25 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1 ms |
2384 KB |
Output is correct |
2 |
Correct |
1 ms |
2384 KB |
Output is correct |
3 |
Correct |
1 ms |
2384 KB |
Output is correct |
4 |
Correct |
1 ms |
2384 KB |
Output is correct |
5 |
Correct |
1 ms |
2384 KB |
Output is correct |
6 |
Correct |
1 ms |
2556 KB |
Output is correct |
7 |
Correct |
1 ms |
2384 KB |
Output is correct |
8 |
Correct |
1 ms |
2384 KB |
Output is correct |
9 |
Correct |
1 ms |
2384 KB |
Output is correct |
10 |
Correct |
1 ms |
2384 KB |
Output is correct |
11 |
Correct |
1 ms |
2384 KB |
Output is correct |
12 |
Correct |
1 ms |
2384 KB |
Output is correct |
13 |
Correct |
1 ms |
2384 KB |
Output is correct |
14 |
Correct |
1 ms |
2384 KB |
Output is correct |
15 |
Correct |
1 ms |
2384 KB |
Output is correct |
16 |
Correct |
1 ms |
2384 KB |
Output is correct |
17 |
Correct |
1 ms |
2384 KB |
Output is correct |
18 |
Correct |
1 ms |
2384 KB |
Output is correct |
19 |
Correct |
1 ms |
2384 KB |
Output is correct |
20 |
Correct |
1 ms |
2384 KB |
Output is correct |
21 |
Correct |
1 ms |
2388 KB |
Output is correct |
22 |
Correct |
1 ms |
2388 KB |
Output is correct |
23 |
Correct |
1 ms |
2388 KB |
Output is correct |
24 |
Incorrect |
1 ms |
2388 KB |
Output isn't correct |
25 |
Halted |
0 ms |
0 KB |
- |