QOJ.ac
QOJ
ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
---|---|---|---|---|---|---|---|---|---|
#481597 | #5141. Identical Parity | 333zhan | WA | 5ms | 3804kb | C++20 | 1.3kb | 2024-07-17 11:04:28 | 2024-07-17 11:04:28 |
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 (n == 1) {
printf ("Yes\n");
return;
}
if (k == 1) {
printf ("No\n");
return;
}
if (k & 1 ^ 1) {
printf ("Yes\n");
return;
}
int t = n / k;
int sum1 = (n + 1) / 2, sum2 = n - sum1;
int a = t, b = 2 * t;
int w = n % k;
if (w > k / 2) {
a += k / 2;
b += w - k / 2;
} else {
a += w;
}
if (sum1 < b || sum2 < a) {
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
x
y
n / k
9 3
1 1 0 1 1 0 1 1 0
0 1 1 0 1 1 0 1 1
0 0 1 0 1 0 1 0 1
9 5
0 0 1 1 1 0 0 1 1
7 3
2 1 3 4 5 7 6
0 1 1 0 1 1 0
8 5
0 0 1 1 1 0 0 1
*/
Details
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Test #1:
score: 100
Accepted
time: 0ms
memory: 3716kb
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: 5ms
memory: 3804kb
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 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 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 Ye...
result:
wrong answer expected NO, found YES [50th token]