#include <bits/stdc++.h>
#define x first
#define y second
#define pii pair<ll, ll>
typedef long long ll;
const ll MOD = 1000000007LL;
const ll INF = 1e15;
using namespace std;
ll n, a[1000010], b[1000010];
int main() {
cin.tie(0); cout.tie(0);
ios::sync_with_stdio(0);
cin >> n;
for (int i = 1; i <= n; i++) cin >> a[i] >> b[i];
for (int j = 1; j <= 50; j++) {
for (int i = 1; i <= n; i++) {
if (a[i] > b[i]) {
a[i%n+1] += (a[i]-max(0LL, b[i]-1))/2;
a[i] -= ((a[i]-max(0LL, b[i]-1))/2)*2;
}
}
}
for (int i = 1; i <= n; i++) {
if (a[i] != b[i]) {
cout << "No\n";
return 0;
}
}
cout << "Yes\n";
return 0;
}
/*
*/
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
2392 KB |
Output is correct |
| 2 |
Correct |
1 ms |
2392 KB |
Output is correct |
| 3 |
Correct |
0 ms |
2396 KB |
Output is correct |
| 4 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 5 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 6 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 7 |
Correct |
2 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 |
2396 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 |
2396 KB |
Output is correct |
| 16 |
Correct |
0 ms |
2396 KB |
Output is correct |
| 17 |
Correct |
1 ms |
2392 KB |
Output is correct |
| 18 |
Correct |
1 ms |
2392 KB |
Output is correct |
| 19 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 20 |
Correct |
0 ms |
2396 KB |
Output is correct |
| 21 |
Correct |
1 ms |
2396 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 |
2512 KB |
Output is correct |
| 25 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 26 |
Correct |
1 ms |
2396 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 |
1 ms |
2512 KB |
Output is correct |
| 32 |
Correct |
1 ms |
2396 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
2392 KB |
Output is correct |
| 2 |
Correct |
1 ms |
2392 KB |
Output is correct |
| 3 |
Correct |
0 ms |
2396 KB |
Output is correct |
| 4 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 5 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 6 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 7 |
Correct |
2 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 |
2396 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 |
2396 KB |
Output is correct |
| 16 |
Correct |
0 ms |
2396 KB |
Output is correct |
| 17 |
Correct |
1 ms |
2392 KB |
Output is correct |
| 18 |
Correct |
1 ms |
2392 KB |
Output is correct |
| 19 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 20 |
Correct |
0 ms |
2396 KB |
Output is correct |
| 21 |
Correct |
1 ms |
2396 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 |
2512 KB |
Output is correct |
| 25 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 26 |
Correct |
1 ms |
2396 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 |
1 ms |
2512 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 |
2396 KB |
Output is correct |
| 37 |
Correct |
1 ms |
2476 KB |
Output is correct |
| 38 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 39 |
Correct |
1 ms |
2512 KB |
Output is correct |
| 40 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 41 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 42 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 43 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 44 |
Correct |
1 ms |
2508 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 |
0 ms |
2512 KB |
Output is correct |
| 51 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 52 |
Correct |
1 ms |
2632 KB |
Output is correct |
| 53 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 54 |
Correct |
1 ms |
2392 KB |
Output is correct |
| 55 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 56 |
Correct |
0 ms |
2396 KB |
Output is correct |
| 57 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 58 |
Correct |
1 ms |
2396 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 |
2392 KB |
Output is correct |
| 2 |
Correct |
1 ms |
2392 KB |
Output is correct |
| 3 |
Correct |
0 ms |
2396 KB |
Output is correct |
| 4 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 5 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 6 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 7 |
Correct |
2 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 |
2396 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 |
2396 KB |
Output is correct |
| 16 |
Correct |
0 ms |
2396 KB |
Output is correct |
| 17 |
Correct |
1 ms |
2392 KB |
Output is correct |
| 18 |
Correct |
1 ms |
2392 KB |
Output is correct |
| 19 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 20 |
Correct |
0 ms |
2396 KB |
Output is correct |
| 21 |
Correct |
1 ms |
2396 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 |
2512 KB |
Output is correct |
| 25 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 26 |
Correct |
1 ms |
2396 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 |
1 ms |
2512 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 |
2396 KB |
Output is correct |
| 37 |
Correct |
1 ms |
2476 KB |
Output is correct |
| 38 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 39 |
Correct |
1 ms |
2512 KB |
Output is correct |
| 40 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 41 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 42 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 43 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 44 |
Correct |
1 ms |
2508 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 |
0 ms |
2512 KB |
Output is correct |
| 51 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 52 |
Correct |
1 ms |
2632 KB |
Output is correct |
| 53 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 54 |
Correct |
1 ms |
2392 KB |
Output is correct |
| 55 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 56 |
Correct |
0 ms |
2396 KB |
Output is correct |
| 57 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 58 |
Correct |
1 ms |
2396 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 |
195 ms |
35452 KB |
Output is correct |
| 64 |
Correct |
124 ms |
20004 KB |
Output is correct |
| 65 |
Correct |
198 ms |
34980 KB |
Output is correct |
| 66 |
Correct |
125 ms |
19832 KB |
Output is correct |
| 67 |
Correct |
124 ms |
21240 KB |
Output is correct |
| 68 |
Correct |
136 ms |
23672 KB |
Output is correct |
| 69 |
Correct |
202 ms |
35668 KB |
Output is correct |
| 70 |
Correct |
132 ms |
20052 KB |
Output is correct |
| 71 |
Correct |
126 ms |
21248 KB |
Output is correct |
| 72 |
Correct |
131 ms |
23684 KB |
Output is correct |
| 73 |
Correct |
193 ms |
35664 KB |
Output is correct |
| 74 |
Correct |
118 ms |
19956 KB |
Output is correct |
| 75 |
Correct |
126 ms |
21388 KB |
Output is correct |
| 76 |
Correct |
139 ms |
23632 KB |
Output is correct |
| 77 |
Correct |
196 ms |
35432 KB |
Output is correct |
| 78 |
Correct |
338 ms |
27724 KB |
Output is correct |
| 79 |
Correct |
348 ms |
27728 KB |
Output is correct |
| 80 |
Correct |
149 ms |
27728 KB |
Output is correct |
| 81 |
Correct |
155 ms |
27724 KB |
Output is correct |
| 82 |
Correct |
298 ms |
19792 KB |
Output is correct |
| 83 |
Correct |
109 ms |
20044 KB |
Output is correct |
| 84 |
Correct |
108 ms |
20244 KB |
Output is correct |
| 85 |
Correct |
199 ms |
36608 KB |
Output is correct |
| 86 |
Correct |
209 ms |
36464 KB |
Output is correct |
| 87 |
Correct |
340 ms |
28648 KB |
Output is correct |
| 88 |
Correct |
172 ms |
28780 KB |
Output is correct |
