@[Toby_Fox](/user/591668) 这样
```
#include<bits/stdc++.h>
using namespace std;
int main(){
int n,x[100001],y[100001],xn[100001],yn[100001];
cin>>n;
for(int i=1;i<=n;i++){
cin>>x[i]>>y[i]>>xn[i]>>yn[i];
if(__gcd(abs(x[i]-xn[i]),abs(y[i]-yn[i]))==1) puts("no");
else puts("yes");
}
return 0;
}
```
by KAqwq @ 2022-05-16 14:04:42