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QOJ

IDProblemSubmitterResultTimeMemoryLanguageFile sizeSubmit timeJudge time
#418128#5141. Identical ParityTolretWA 7ms3740kbC++201.4kb2024-05-23 10:59:382024-05-23 10:59:40

Judging History

你现在查看的是最新测评结果

  • [2024-05-23 10:59:40]
  • 评测
  • 测评结果:WA
  • 用时:7ms
  • 内存:3740kb
  • [2024-05-23 10:59:38]
  • 提交

answer

#include<bits/stdc++.h>
#define int long long int
#define pb push_back
#define pii pair<int,int>
#define fi first
#define se second
using namespace std;
const int maxn=1e6+5;
const int inf=1e18;
int tt=1;
int exgcd(int a,int b,int &x,int &y)
{
    if(b==0){
        x=1,y=0;return a;
    }
    int d=exgcd(b,a%b,x,y);
    int z=x;x=y;y=z-y*(a/b);
    return d;
}
int n,k;
void solve()
{
    cin>>n>>k;
    int a=(n/k+1),b=n/k,x0,y0;
    int d=exgcd(a,b,x0,y0);
    int r=(n+1)/2;
    if(n%k==0) {
        if((n+1)/2%(n/k)==0)
        {
        cout << "Yes" << '\n';
        return;
        }
        else
        {
            cout<<"No"<<'\n';
            return;
        }
    }

    if(r%d)
    {
        cout<<"No"<<'\n';return ;
    }
    x0*=(n+1)/2/d;
    y0*=(n+1)/2/d;
    x0%=(n/k);
    int minn=((n+1)/2 -(n/k)*(k-n%k))/(n/k+1);
    while(x0<=0)
    {
        x0+=n/k;
    }
    x0+=minn/(n/k) *(n/k);
    while(x0-(n/k)<minn)
    {
        x0+=n/k;
    }
    while(x0-(n/k)>=minn)
    {
        x0-=n/k;
    }
    x0+=n/k;
    if(x0<=n%k)
    {
        cout<<"Yes"<<'\n';
    }
    else
    {
        cout<<"No"<<'\n';
    }

}
signed main()
{
	ios::sync_with_stdio(false);
    cin.tie(nullptr); cout.tie(nullptr);
    cout<<fixed<<setprecision(10);
    cin>>tt;
    for(int i=1;i<=tt;i++)
    solve();
}

Details

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Test #1:

score: 100
Accepted
time: 0ms
memory: 3688kb

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: 7ms
memory: 3740kb

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
No
Yes
Yes
Yes
No
Yes
No
Yes
Yes
Yes
No
No
No
Yes
Yes
Yes
Yes
No
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No
No
No
No
Yes
Yes
Yes
Yes
Yes
No
Yes
No
No
No
Yes
Yes
Yes
Yes
Yes
No
No
No
No
No
Yes
Yes
Yes
Yes
Yes
Yes
No
Yes
No
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No
No
No
No
Ye...

result:

wrong answer expected YES, found NO [12th token]