#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
const int MX=1e6+5;
int N;
ll A[MX], B[MX];
int main() {
cin.tie(0); ios_base::sync_with_stdio(0);
cin>>N;
for(int i=0;i<N;i++) cin>>A[i]>>B[i];
for(int k=0;k<51;k++) {
for(int i=0;i<N;i++) {
if(A[i]>B[i]) {
ll nxt=min(A[i]/2,(A[i]-B[i]+1)/2);
A[i]-=2*nxt;
A[(i+1)%N]+=nxt;
}
}
}
bool ok=1;
for(int i=0;i<N;i++)
ok&=A[i]==B[i];
cout<<(ok?"Yes":"No")<<'\n';
}
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 2 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 3 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 4 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 5 |
Correct |
2 ms |
2396 KB |
Output is correct |
| 6 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 7 |
Correct |
0 ms |
2396 KB |
Output is correct |
| 8 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 9 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 10 |
Correct |
1 ms |
2392 KB |
Output is correct |
| 11 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 12 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 13 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 14 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 15 |
Correct |
1 ms |
2392 KB |
Output is correct |
| 16 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 17 |
Correct |
1 ms |
2648 KB |
Output is correct |
| 18 |
Correct |
1 ms |
2392 KB |
Output is correct |
| 19 |
Correct |
1 ms |
2456 KB |
Output is correct |
| 20 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 21 |
Correct |
1 ms |
2512 KB |
Output is correct |
| 22 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 23 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 24 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 25 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 26 |
Correct |
1 ms |
2516 KB |
Output is correct |
| 27 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 28 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 29 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 30 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 31 |
Correct |
0 ms |
2396 KB |
Output is correct |
| 32 |
Correct |
1 ms |
2396 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 2 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 3 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 4 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 5 |
Correct |
2 ms |
2396 KB |
Output is correct |
| 6 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 7 |
Correct |
0 ms |
2396 KB |
Output is correct |
| 8 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 9 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 10 |
Correct |
1 ms |
2392 KB |
Output is correct |
| 11 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 12 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 13 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 14 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 15 |
Correct |
1 ms |
2392 KB |
Output is correct |
| 16 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 17 |
Correct |
1 ms |
2648 KB |
Output is correct |
| 18 |
Correct |
1 ms |
2392 KB |
Output is correct |
| 19 |
Correct |
1 ms |
2456 KB |
Output is correct |
| 20 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 21 |
Correct |
1 ms |
2512 KB |
Output is correct |
| 22 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 23 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 24 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 25 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 26 |
Correct |
1 ms |
2516 KB |
Output is correct |
| 27 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 28 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 29 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 30 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 31 |
Correct |
0 ms |
2396 KB |
Output is correct |
| 32 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 33 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 34 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 35 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 36 |
Correct |
1 ms |
2404 KB |
Output is correct |
| 37 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 38 |
Correct |
1 ms |
2404 KB |
Output is correct |
| 39 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 40 |
Correct |
1 ms |
2392 KB |
Output is correct |
| 41 |
Correct |
1 ms |
2392 KB |
Output is correct |
| 42 |
Correct |
1 ms |
2404 KB |
Output is correct |
| 43 |
Correct |
1 ms |
2592 KB |
Output is correct |
| 44 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 45 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 46 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 47 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 48 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 49 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 50 |
Correct |
1 ms |
2404 KB |
Output is correct |
| 51 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 52 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 53 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 54 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 55 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 56 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 57 |
Correct |
1 ms |
2392 KB |
Output is correct |
| 58 |
Correct |
1 ms |
2392 KB |
Output is correct |
| 59 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 60 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 61 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 62 |
Correct |
1 ms |
2396 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 2 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 3 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 4 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 5 |
Correct |
2 ms |
2396 KB |
Output is correct |
| 6 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 7 |
Correct |
0 ms |
2396 KB |
Output is correct |
| 8 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 9 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 10 |
Correct |
1 ms |
2392 KB |
Output is correct |
| 11 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 12 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 13 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 14 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 15 |
Correct |
1 ms |
2392 KB |
Output is correct |
| 16 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 17 |
Correct |
1 ms |
2648 KB |
Output is correct |
| 18 |
Correct |
1 ms |
2392 KB |
Output is correct |
| 19 |
Correct |
1 ms |
2456 KB |
Output is correct |
| 20 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 21 |
Correct |
1 ms |
2512 KB |
Output is correct |
| 22 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 23 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 24 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 25 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 26 |
Correct |
1 ms |
2516 KB |
Output is correct |
| 27 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 28 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 29 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 30 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 31 |
Correct |
0 ms |
2396 KB |
Output is correct |
| 32 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 33 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 34 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 35 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 36 |
Correct |
1 ms |
2404 KB |
Output is correct |
| 37 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 38 |
Correct |
1 ms |
2404 KB |
Output is correct |
| 39 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 40 |
Correct |
1 ms |
2392 KB |
Output is correct |
| 41 |
Correct |
1 ms |
2392 KB |
Output is correct |
| 42 |
Correct |
1 ms |
2404 KB |
Output is correct |
| 43 |
Correct |
1 ms |
2592 KB |
Output is correct |
| 44 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 45 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 46 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 47 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 48 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 49 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 50 |
Correct |
1 ms |
2404 KB |
Output is correct |
| 51 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 52 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 53 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 54 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 55 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 56 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 57 |
Correct |
1 ms |
2392 KB |
Output is correct |
| 58 |
Correct |
1 ms |
2392 KB |
Output is correct |
| 59 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 60 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 61 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 62 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 63 |
Correct |
200 ms |
35356 KB |
Output is correct |
| 64 |
Correct |
135 ms |
19996 KB |
Output is correct |
| 65 |
Correct |
193 ms |
34808 KB |
Output is correct |
| 66 |
Correct |
122 ms |
19792 KB |
Output is correct |
| 67 |
Correct |
130 ms |
21368 KB |
Output is correct |
| 68 |
Correct |
136 ms |
23660 KB |
Output is correct |
| 69 |
Correct |
204 ms |
35448 KB |
Output is correct |
| 70 |
Correct |
124 ms |
19828 KB |
Output is correct |
| 71 |
Correct |
129 ms |
21228 KB |
Output is correct |
| 72 |
Correct |
138 ms |
23632 KB |
Output is correct |
| 73 |
Correct |
191 ms |
35408 KB |
Output is correct |
| 74 |
Correct |
133 ms |
20196 KB |
Output is correct |
| 75 |
Correct |
129 ms |
21372 KB |
Output is correct |
| 76 |
Correct |
141 ms |
23744 KB |
Output is correct |
| 77 |
Correct |
204 ms |
35320 KB |
Output is correct |
| 78 |
Correct |
348 ms |
27628 KB |
Output is correct |
| 79 |
Correct |
349 ms |
27480 KB |
Output is correct |
| 80 |
Correct |
159 ms |
27692 KB |
Output is correct |
| 81 |
Correct |
158 ms |
27472 KB |
Output is correct |
| 82 |
Correct |
307 ms |
19796 KB |
Output is correct |
| 83 |
Correct |
117 ms |
19796 KB |
Output is correct |
| 84 |
Correct |
111 ms |
19992 KB |
Output is correct |
| 85 |
Correct |
210 ms |
36348 KB |
Output is correct |
| 86 |
Correct |
199 ms |
36408 KB |
Output is correct |
| 87 |
Correct |
346 ms |
28784 KB |
Output is correct |
| 88 |
Correct |
162 ms |
28784 KB |
Output is correct |
