QOJ.ac
QOJ
| ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
|---|---|---|---|---|---|---|---|---|---|
| #728554 | #5141. Identical Parity | yixuanoct# | WA | 42ms | 3628kb | C++20 | 705b | 2024-11-09 15:26:34 | 2024-11-09 15:26:35 |
Judging History
answer
#include <bits/stdc++.h>
using namespace std;
#define int long long
void solve() {
int n, k;
cin >> n >> k;
if (k % 2 == 0) cout << "Yes\n";
else if (k == 1) cout << "No\n";
else {
int m = n / k;
int cnt1 = (n + 1) / 2 - (k + 1) / 2 * m;
int cnt2 = n / 2 - k / 2 * m;
if (cnt1 < 0 || cnt2 < 0) {
cout << "No\n";
return;
}
if (cnt1 <= k / 2 + 1 && cnt2 <= k / 2) cout << "Yes\n";
else cout << "No\n";
// cout << cnt1 << ' ' << cnt2 << '\n';
}
}
signed main() {
// ios::sync_with_stdio(false), cin.tie(0);
int _ = 1;
cin >> _;
while (_--) solve();
}
Details
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Test #1:
score: 100
Accepted
time: 0ms
memory: 3628kb
input:
3 3 1 4 2 5 3
output:
No Yes Yes
result:
ok 3 token(s): yes count is 2, no count is 1
Test #2:
score: -100
Wrong Answer
time: 42ms
memory: 3628kb
input:
100000 1 1 2 1 2 2 3 1 3 2 3 3 4 1 4 2 4 3 4 4 5 1 5 2 5 3 5 4 5 5 6 1 6 2 6 3 6 4 6 5 6 6 7 1 7 2 7 3 7 4 7 5 7 6 7 7 8 1 8 2 8 3 8 4 8 5 8 6 8 7 8 8 9 1 9 2 9 3 9 4 9 5 9 6 9 7 9 8 9 9 10 1 10 2 10 3 10 4 10 5 10 6 10 7 10 8 10 9 10 10 11 1 11 2 11 3 11 4 11 5 11 6 11 7 11 8 11 9 11 10 11 11 12 1 ...
output:
No No Yes No Yes Yes No Yes Yes Yes No Yes Yes Yes Yes No Yes No Yes Yes Yes No Yes Yes Yes Yes Yes Yes No Yes No Yes Yes Yes Yes Yes No Yes No Yes Yes Yes Yes Yes Yes No Yes No Yes No Yes Yes Yes Yes Yes No Yes No Yes Yes Yes Yes Yes Yes Yes Yes No Yes No Yes Yes Yes Yes Yes Yes Yes Yes Yes No Yes ...
result:
wrong answer expected YES, found NO [1st token]