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QOJ

IDProblemSubmitterResultTimeMemoryLanguageFile sizeSubmit timeJudge time
#756192#5141. Identical ParityshunhualinWA 8ms3716kbC++201.1kb2024-11-16 19:19:412024-11-16 19:19:41

Judging History

你现在查看的是最新测评结果

  • [2024-11-16 19:19:41]
  • 评测
  • 测评结果:WA
  • 用时:8ms
  • 内存:3716kb
  • [2024-11-16 19:19:41]
  • 提交

answer

#include <bits/stdc++.h>
#define int long long
#define endl "\n"
const int mod = 1e9 + 7;
const int N = 1e5 + 50;
using namespace std;
int Exgcd(int a, int b, int &x, int &y) {
    if (!b) {
        x = 1;
        y = 0;
        return a;
    }
    int d = Exgcd(b, a % b, x, y);
    int t = x;
    x = y;
    y = t - (a / b) * y;
    return d;
}
void slove() {
    int n, k;
    cin >> n >> k;
    int p = n % k, q = k - n % k;
    int a = n / k + 1, b = n / k, c = (n + 1) / 2;
    int x, y;
	int d = Exgcd(a, b, x, y);
	if(c % d != 0){
		cout << "No" << endl;
	}else{
		a = a / d, b = b / d, c = c / d;
		x = x * c, y = y * c;
		int r1 = floor(1.0 * (q - x) / b);
		int l1 = ceil(1.0 * -x / b);
		int l2 = ceil(1.0 * (y - p) / a);
		int r2 = floor(1.0 * y / a);
		int l = max(l1, l2), r = max(r1, r2);
		if(l <= r){
			cout << "Yes" << endl;
		}else{
			cout << "No" << endl;
		}
	}
}
signed main() {
    ios::sync_with_stdio(0), cin.tie(0), cout.tie(0);
    int T = 1;
    cin >> T;
    while(T--) {
        slove();
    }
    return 0;
}



Details

Tip: Click on the bar to expand more detailed information

Test #1:

score: 100
Accepted
time: 0ms
memory: 3580kb

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: 8ms
memory: 3716kb

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
Yes
Yes
No
Yes
Yes
No
Yes
Yes
Yes
No
Yes
Yes
Yes
Yes
No
No
Yes
Yes
Yes
Yes
No
Yes
Yes
Yes
Yes
Yes
Yes
No
No
Yes
Yes
Yes
Yes
Yes
Yes
No
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No
No
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No
No
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No...

result:

wrong answer expected NO, found YES [2nd token]