QOJ.ac
QOJ
ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
---|---|---|---|---|---|---|---|---|---|
#638438 | #5141. Identical Parity | Lynia | WA | 9ms | 3724kb | C++23 | 1.6kb | 2024-10-13 15:56:12 | 2024-10-13 15:56:14 |
Judging History
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
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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]