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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 |
|---|---|---|---|---|---|---|---|---|---|
| #481593 | #5141. Identical Parity | 333zhan | WA | 0ms | 3740kb | C++20 | 815b | 2024-07-17 10:48:35 | 2024-07-17 10:48:35 |
Judging History
answer
#include <bits/stdc++.h>
#define int long long
using namespace std;
inline int read () {
int w = 1, s = 0; char ch = getchar ();
for (; ! isdigit (ch); ch = getchar ()) if (ch == '-') w = -1;
for (; isdigit (ch); ch = getchar ()) s = (s << 1) + (s << 3) + (ch ^ 48);
return s * w;
}
void solve () {
int n = read (), k = read ();
if (k == 1) {
printf ("No\n");
return;
}
if (n & 1 ^ 1 && k <= n / 2 && k & 1) {
printf ("No\n");
return;
}
printf ("Yes\n");
}
signed main () {
// ios::sync_with_stdio (false);
// cin.tie (nullptr);
int T = 1;
// cin >> T;
T = read ();
while (T --) {
solve ();
}
return 0;
}
/*
4 3
1 2 3 4
2 1 3 4
6 3
2 1 3 4 5 6
7 3
2 1 3 4 5 7 6
*/
Details
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Test #1:
score: 100
Accepted
time: 0ms
memory: 3712kb
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: 0ms
memory: 3740kb
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 Yes Yes Yes Yes Yes Yes Yes No Yes No Yes No Yes Yes Yes Yes Yes No Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes No Yes No Yes No Yes Yes Yes Yes Yes Yes Yes No Yes...
result:
wrong answer expected YES, found NO [1st token]