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QOJ

IDProblemSubmitterResultTimeMemoryLanguageFile sizeSubmit timeJudge time
#638438#5141. Identical ParityLyniaWA 9ms3724kbC++231.6kb2024-10-13 15:56:122024-10-13 15:56:14

Judging History

你现在查看的是最新测评结果

  • [2024-10-13 15:56:14]
  • 评测
  • 测评结果:WA
  • 用时:9ms
  • 内存:3724kb
  • [2024-10-13 15:56:12]
  • 提交

answer

#include<bits/stdc++.h>
#define fa(i,op,n) for(int i=op;i<=n;i++)
#define fb(i,op,n) for(int i=op;i>=n;i--)
#define endl '\n'
#define pb push_back
#define var auto
using namespace std;
using ll = long long;
using pii = pair<int, int>;

const int N = 1e6 + 10;
const double eps = 1e-5;
ll n, k;

bool solve() 
{
	cin >> n >> k;
	if (n == 1 && k == 1) return true;
	if (k == 1) return false;
	if (k % 2 == 0) return true;
	if (n < k * 2) return true;
	if (n % k == 0) return false;
	// if(1){
		// ll r = n%k;
		// if(r == 0) return 0;
		// ll x1 = (k+1)/2*1ll*(n/k);
		// ll x2 = k/2*1ll*(n/k);
		// if(n%2){
			// double res = (r-1)*1.0/(n/k),res1 = (r+1)*1.0/(n/k);
			// if((r-1)/(n/k)%2 == 1&&fabs(res-(r-1)/(n/k))<=eps){
				// return 1;
			// }
			// if((r+1)/(n/k)%2 == 1&&fabs(res1-(r+1)/(n/k))<=eps){
				// return 1;
			// }
			// return 0;
		// }else{
			// double res = (r)*1.0/(n/k);
			// if(fabs(res-(r)/(n/k))<=eps&&(r)/(n/k)%2 == 1){
				// return 1;
			// }
			// return 0;
		// }
	// }
	if(n & 1){
		ll mor = n / k - 1;
		ll bu = k / 2;
		if(mor <= bu){
			ll sheng = n - mor - n / k * k;
			if(sheng / 2 <= (k / 2 - mor))return 1;
			else return 0;
		}
		else return 0;
	}else{
		ll mor = n / k;
		ll bu = k / 2;
		if(mor <= bu){
			ll sheng = n - mor - n / k * k;
			if(sheng / 2 <= (k / 2 - mor))return 1;
			else return 0;
		}
		else return 0;
	}
	return true;
}
int main() {
	ios::sync_with_stdio(0), cin.tie(0), cout.tie(0);
	int _ = 1;
	cin >> _;
	while (_--)
	{
		if (solve()) cout << "Yes\n";
		else cout << "No\n";
	}
	return 0;
}

Details

Tip: Click on the bar to expand more detailed information

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: 3724kb

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
No
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
Yes...

result:

wrong answer expected NO, found YES [238th token]