QOJ.ac
QOJ
ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
---|---|---|---|---|---|---|---|---|---|
#418128 | #5141. Identical Parity | Tolret | WA | 7ms | 3740kb | C++20 | 1.4kb | 2024-05-23 10:59:38 | 2024-05-23 10:59:40 |
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+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]