QOJ.ac
QOJ
The 2nd Universal Cup Finals is coming! Check out our event page, schedule, and competition rules!
| ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
|---|---|---|---|---|---|---|---|---|---|
| #727828 | #5141. Identical Parity | yixuanoct# | WA | 9ms | 3660kb | C++20 | 581b | 2024-11-09 13:55:17 | 2024-11-09 13:55:22 |
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 || k == n) cout << "Yes\n";
else if (k == 1) cout << "No\n";
else {
int m = k * (k + 1) / 2 + k / 2;
if (n > m) {
// printf("No\n");
cout << "No\n";
}
else {
// printf("Yes\n");
cout << "Yes\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: 3660kb
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: 9ms
memory: 3648kb
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:
Yes No Yes No Yes Yes No Yes Yes Yes No Yes Yes Yes Yes No Yes Yes 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 Yes 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 Y...
result:
wrong answer expected NO, found YES [18th token]