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QOJ

IDProblemSubmitterResultTimeMemoryLanguageFile sizeSubmit timeJudge time
#418219#5141. Identical ParityTolretWA 5ms3752kbC++201.4kb2024-05-23 11:51:082024-05-23 11:51:09

Judging History

你现在查看的是最新测评结果

  • [2024-05-23 11:51:09]
  • 评测
  • 测评结果:WA
  • 用时:5ms
  • 内存:3752kb
  • [2024-05-23 11:51:08]
  • 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))/(n/k+1);
    while(x0<0)
    {
        x0+=n/k;
    }
    x0+=minn/(n/k) *(n/k);
    while(x0<minn)
    {
        x0+=n/k;
    }
    while(x0>=minn)
    {
        x0-=n/k;
    }
    x0+=n/k;
    int y=((n+1)/2-x0*(n/k+1))/(n/k);
    if(x0<=n%k&&y>=0)
    {
        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: 3668kb

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: 3752kb

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]