#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef long double ld;
#define FOR(i, a, b) for(ll i = (ll)a; i <= (ll)b; i++)
#define DEC(i, a, b) for(ll i = (ll)a; i >= (ll)b; i--)
typedef pair<ll, ll> pi;
#define f first
#define s second
typedef vector<ll> vi;
typedef vector<pi> vpi;
#define pb push_back
#define all(v) v.begin(), v.end()
#define fastio ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0)
ll n, a[1000005], b[1000005], arr[1000005];
bool az = 1, bz = 1;
int main() {
fastio; cin >> n;
FOR(i, 0, n-1) {
cin >> a[i] >> b[i];
if (a[i] != 0) az = 0;
if (b[i] != 0) bz = 0;
}
if (bz) cout << (az ? "Yes" : "No");
else {
while (true) {
bool ok = false;
FOR(i, 0, n-1) if (a[i] > b[i]) {
ll send = (a[i] - b[i] + 1)/2; //ceiling!!
a[(i+1)%n] += send;
a[i] -= 2*send;
ok = true;
}
if (!ok) break;
}
bool ok = 1;
FOR(i, 0, n-1) if (a[i] != b[i]) ok = 0;
cout << (ok ? "Yes" : "No");
}
}
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
5 ms |
384 KB |
Output is correct |
| 2 |
Correct |
4 ms |
384 KB |
Output is correct |
| 3 |
Correct |
5 ms |
384 KB |
Output is correct |
| 4 |
Correct |
5 ms |
384 KB |
Output is correct |
| 5 |
Correct |
5 ms |
384 KB |
Output is correct |
| 6 |
Correct |
5 ms |
384 KB |
Output is correct |
| 7 |
Correct |
5 ms |
384 KB |
Output is correct |
| 8 |
Correct |
4 ms |
384 KB |
Output is correct |
| 9 |
Correct |
4 ms |
384 KB |
Output is correct |
| 10 |
Correct |
4 ms |
384 KB |
Output is correct |
| 11 |
Correct |
5 ms |
384 KB |
Output is correct |
| 12 |
Correct |
5 ms |
384 KB |
Output is correct |
| 13 |
Correct |
5 ms |
384 KB |
Output is correct |
| 14 |
Correct |
4 ms |
384 KB |
Output is correct |
| 15 |
Correct |
5 ms |
384 KB |
Output is correct |
| 16 |
Correct |
5 ms |
384 KB |
Output is correct |
| 17 |
Correct |
5 ms |
384 KB |
Output is correct |
| 18 |
Correct |
5 ms |
384 KB |
Output is correct |
| 19 |
Correct |
5 ms |
384 KB |
Output is correct |
| 20 |
Correct |
4 ms |
384 KB |
Output is correct |
| 21 |
Correct |
4 ms |
384 KB |
Output is correct |
| 22 |
Correct |
5 ms |
384 KB |
Output is correct |
| 23 |
Correct |
5 ms |
384 KB |
Output is correct |
| 24 |
Correct |
5 ms |
384 KB |
Output is correct |
| 25 |
Correct |
5 ms |
384 KB |
Output is correct |
| 26 |
Correct |
5 ms |
384 KB |
Output is correct |
| 27 |
Correct |
4 ms |
384 KB |
Output is correct |
| 28 |
Correct |
4 ms |
384 KB |
Output is correct |
| 29 |
Correct |
4 ms |
384 KB |
Output is correct |
| 30 |
Correct |
5 ms |
384 KB |
Output is correct |
| 31 |
Correct |
4 ms |
256 KB |
Output is correct |
| 32 |
Correct |
5 ms |
384 KB |
Output is correct |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
5 ms |
384 KB |
Output is correct |
| 2 |
Correct |
4 ms |
384 KB |
Output is correct |
| 3 |
Correct |
5 ms |
384 KB |
Output is correct |
| 4 |
Correct |
5 ms |
384 KB |
Output is correct |
| 5 |
Correct |
5 ms |
384 KB |
Output is correct |
| 6 |
Correct |
5 ms |
384 KB |
Output is correct |
| 7 |
Correct |
5 ms |
384 KB |
Output is correct |
| 8 |
Correct |
4 ms |
384 KB |
Output is correct |
| 9 |
Correct |
4 ms |
384 KB |
Output is correct |
| 10 |
Correct |
4 ms |
384 KB |
Output is correct |
| 11 |
Correct |
5 ms |
384 KB |
Output is correct |
| 12 |
Correct |
5 ms |
384 KB |
Output is correct |
| 13 |
Correct |
5 ms |
384 KB |
Output is correct |
| 14 |
Correct |
4 ms |
384 KB |
Output is correct |
| 15 |
Correct |
5 ms |
384 KB |
Output is correct |
| 16 |
Correct |
5 ms |
384 KB |
Output is correct |
| 17 |
Correct |
5 ms |
384 KB |
Output is correct |
| 18 |
Correct |
5 ms |
384 KB |
Output is correct |
| 19 |
Correct |
5 ms |
384 KB |
Output is correct |
| 20 |
Correct |
4 ms |
384 KB |
Output is correct |
| 21 |
Correct |
4 ms |
384 KB |
Output is correct |
| 22 |
Correct |
5 ms |
384 KB |
Output is correct |
| 23 |
Correct |
5 ms |
384 KB |
Output is correct |
| 24 |
Correct |
5 ms |
384 KB |
Output is correct |
| 25 |
Correct |
5 ms |
384 KB |
Output is correct |
| 26 |
Correct |
5 ms |
384 KB |
Output is correct |
| 27 |
Correct |
4 ms |
384 KB |
Output is correct |
| 28 |
Correct |
4 ms |
384 KB |
Output is correct |
| 29 |
Correct |
4 ms |
384 KB |
Output is correct |
| 30 |
Correct |
5 ms |
384 KB |
Output is correct |
| 31 |
Correct |
4 ms |
256 KB |
Output is correct |
| 32 |
Correct |
5 ms |
384 KB |
Output is correct |
| 33 |
Correct |
5 ms |
384 KB |
Output is correct |
| 34 |
Correct |
5 ms |
384 KB |
Output is correct |
| 35 |
Correct |
5 ms |
384 KB |
Output is correct |
| 36 |
Correct |
4 ms |
384 KB |
Output is correct |
| 37 |
Correct |
4 ms |
384 KB |
Output is correct |
| 38 |
Correct |
4 ms |
384 KB |
Output is correct |
| 39 |
Correct |
5 ms |
384 KB |
Output is correct |
| 40 |
Correct |
4 ms |
384 KB |
Output is correct |
| 41 |
Correct |
5 ms |
384 KB |
Output is correct |
| 42 |
Correct |
4 ms |
384 KB |
Output is correct |
| 43 |
Correct |
5 ms |
384 KB |
Output is correct |
| 44 |
Correct |
4 ms |
384 KB |
Output is correct |
| 45 |
Correct |
5 ms |
384 KB |
Output is correct |
| 46 |
Correct |
5 ms |
384 KB |
Output is correct |
| 47 |
Correct |
5 ms |
384 KB |
Output is correct |
| 48 |
Correct |
5 ms |
384 KB |
Output is correct |
| 49 |
Correct |
4 ms |
384 KB |
Output is correct |
| 50 |
Correct |
5 ms |
384 KB |
Output is correct |
| 51 |
Correct |
4 ms |
384 KB |
Output is correct |
| 52 |
Correct |
4 ms |
384 KB |
Output is correct |
| 53 |
Correct |
5 ms |
384 KB |
Output is correct |
| 54 |
Correct |
5 ms |
384 KB |
Output is correct |
| 55 |
Correct |
5 ms |
384 KB |
Output is correct |
| 56 |
Correct |
4 ms |
384 KB |
Output is correct |
| 57 |
Correct |
5 ms |
384 KB |
Output is correct |
| 58 |
Correct |
5 ms |
384 KB |
Output is correct |
| 59 |
Correct |
5 ms |
384 KB |
Output is correct |
| 60 |
Correct |
5 ms |
384 KB |
Output is correct |
| 61 |
Correct |
5 ms |
384 KB |
Output is correct |
| 62 |
Correct |
5 ms |
384 KB |
Output is correct |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
5 ms |
384 KB |
Output is correct |
| 2 |
Correct |
4 ms |
384 KB |
Output is correct |
| 3 |
Correct |
5 ms |
384 KB |
Output is correct |
| 4 |
Correct |
5 ms |
384 KB |
Output is correct |
| 5 |
Correct |
5 ms |
384 KB |
Output is correct |
| 6 |
Correct |
5 ms |
384 KB |
Output is correct |
| 7 |
Correct |
5 ms |
384 KB |
Output is correct |
| 8 |
Correct |
4 ms |
384 KB |
Output is correct |
| 9 |
Correct |
4 ms |
384 KB |
Output is correct |
| 10 |
Correct |
4 ms |
384 KB |
Output is correct |
| 11 |
Correct |
5 ms |
384 KB |
Output is correct |
| 12 |
Correct |
5 ms |
384 KB |
Output is correct |
| 13 |
Correct |
5 ms |
384 KB |
Output is correct |
| 14 |
Correct |
4 ms |
384 KB |
Output is correct |
| 15 |
Correct |
5 ms |
384 KB |
Output is correct |
| 16 |
Correct |
5 ms |
384 KB |
Output is correct |
| 17 |
Correct |
5 ms |
384 KB |
Output is correct |
| 18 |
Correct |
5 ms |
384 KB |
Output is correct |
| 19 |
Correct |
5 ms |
384 KB |
Output is correct |
| 20 |
Correct |
4 ms |
384 KB |
Output is correct |
| 21 |
Correct |
4 ms |
384 KB |
Output is correct |
| 22 |
Correct |
5 ms |
384 KB |
Output is correct |
| 23 |
Correct |
5 ms |
384 KB |
Output is correct |
| 24 |
Correct |
5 ms |
384 KB |
Output is correct |
| 25 |
Correct |
5 ms |
384 KB |
Output is correct |
| 26 |
Correct |
5 ms |
384 KB |
Output is correct |
| 27 |
Correct |
4 ms |
384 KB |
Output is correct |
| 28 |
Correct |
4 ms |
384 KB |
Output is correct |
| 29 |
Correct |
4 ms |
384 KB |
Output is correct |
| 30 |
Correct |
5 ms |
384 KB |
Output is correct |
| 31 |
Correct |
4 ms |
256 KB |
Output is correct |
| 32 |
Correct |
5 ms |
384 KB |
Output is correct |
| 33 |
Correct |
5 ms |
384 KB |
Output is correct |
| 34 |
Correct |
5 ms |
384 KB |
Output is correct |
| 35 |
Correct |
5 ms |
384 KB |
Output is correct |
| 36 |
Correct |
4 ms |
384 KB |
Output is correct |
| 37 |
Correct |
4 ms |
384 KB |
Output is correct |
| 38 |
Correct |
4 ms |
384 KB |
Output is correct |
| 39 |
Correct |
5 ms |
384 KB |
Output is correct |
| 40 |
Correct |
4 ms |
384 KB |
Output is correct |
| 41 |
Correct |
5 ms |
384 KB |
Output is correct |
| 42 |
Correct |
4 ms |
384 KB |
Output is correct |
| 43 |
Correct |
5 ms |
384 KB |
Output is correct |
| 44 |
Correct |
4 ms |
384 KB |
Output is correct |
| 45 |
Correct |
5 ms |
384 KB |
Output is correct |
| 46 |
Correct |
5 ms |
384 KB |
Output is correct |
| 47 |
Correct |
5 ms |
384 KB |
Output is correct |
| 48 |
Correct |
5 ms |
384 KB |
Output is correct |
| 49 |
Correct |
4 ms |
384 KB |
Output is correct |
| 50 |
Correct |
5 ms |
384 KB |
Output is correct |
| 51 |
Correct |
4 ms |
384 KB |
Output is correct |
| 52 |
Correct |
4 ms |
384 KB |
Output is correct |
| 53 |
Correct |
5 ms |
384 KB |
Output is correct |
| 54 |
Correct |
5 ms |
384 KB |
Output is correct |
| 55 |
Correct |
5 ms |
384 KB |
Output is correct |
| 56 |
Correct |
4 ms |
384 KB |
Output is correct |
| 57 |
Correct |
5 ms |
384 KB |
Output is correct |
| 58 |
Correct |
5 ms |
384 KB |
Output is correct |
| 59 |
Correct |
5 ms |
384 KB |
Output is correct |
| 60 |
Correct |
5 ms |
384 KB |
Output is correct |
| 61 |
Correct |
5 ms |
384 KB |
Output is correct |
| 62 |
Correct |
5 ms |
384 KB |
Output is correct |
| 63 |
Correct |
280 ms |
16864 KB |
Output is correct |
| 64 |
Correct |
139 ms |
19832 KB |
Output is correct |
| 65 |
Correct |
286 ms |
16980 KB |
Output is correct |
| 66 |
Correct |
140 ms |
19832 KB |
Output is correct |
| 67 |
Correct |
145 ms |
21240 KB |
Output is correct |
| 68 |
Correct |
154 ms |
21240 KB |
Output is correct |
| 69 |
Correct |
284 ms |
16944 KB |
Output is correct |
| 70 |
Correct |
154 ms |
19964 KB |
Output is correct |
| 71 |
Correct |
144 ms |
21240 KB |
Output is correct |
| 72 |
Correct |
162 ms |
21252 KB |
Output is correct |
| 73 |
Correct |
268 ms |
16888 KB |
Output is correct |
| 74 |
Correct |
131 ms |
19832 KB |
Output is correct |
| 75 |
Correct |
137 ms |
21240 KB |
Output is correct |
| 76 |
Correct |
160 ms |
21252 KB |
Output is correct |
| 77 |
Correct |
274 ms |
16888 KB |
Output is correct |
| 78 |
Correct |
196 ms |
21244 KB |
Output is correct |
| 79 |
Correct |
196 ms |
21240 KB |
Output is correct |
| 80 |
Correct |
202 ms |
21240 KB |
Output is correct |
| 81 |
Correct |
204 ms |
21240 KB |
Output is correct |
| 82 |
Correct |
124 ms |
19832 KB |
Output is correct |
| 83 |
Correct |
128 ms |
19960 KB |
Output is correct |
| 84 |
Correct |
106 ms |
19964 KB |
Output is correct |
| 85 |
Correct |
296 ms |
16888 KB |
Output is correct |
| 86 |
Correct |
290 ms |
16964 KB |
Output is correct |
| 87 |
Correct |
196 ms |
21240 KB |
Output is correct |
| 88 |
Correct |
208 ms |
21240 KB |
Output is correct |
