QOJ.ac
QOJ
ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
---|---|---|---|---|---|---|---|---|---|
#418224 | #5141. Identical Parity | Tolret | WA | 11ms | 3708kb | C++20 | 1.4kb | 2024-05-23 11:52:47 | 2024-05-23 11:52:52 |
Judging History
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&&y<=(k-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: 3708kb
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: 11ms
memory: 3672kb
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]