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QOJ

IDProblemSubmitterResultTimeMemoryLanguageFile sizeSubmit timeJudge time
#481597#5141. Identical Parity333zhanWA 5ms3804kbC++201.3kb2024-07-17 11:04:282024-07-17 11:04:28

Judging History

你现在查看的是最新测评结果

  • [2024-07-17 11:04:28]
  • 评测
  • 测评结果:WA
  • 用时:5ms
  • 内存:3804kb
  • [2024-07-17 11:04:28]
  • 提交

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

Tip: Click on the bar to expand more detailed information

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]