OJ-Problems-Source/HDOJ/1999_autoAC.cpp
2016-08-19 10:57:19 +08:00

36 lines
653 B
C++

#include<iostream>
using namespace std;
bool f(int n)
{
for(int i=2;i<=n/2;i++)
if(n%i==0)
return false;
return true;
}
int main()
{
int T;
cin>>T;
while(T--)
{
int i,n,x;
cin>>n;
if(n==2||n==5)cout<<"yes"<<endl;
else if(n<5) cout<<"no"<<endl;
else
for(i=2;i<=(n-1)/2;i++)
{
if(f(i)&&f(n-1-i)||f(n-1))
{
cout<<"no"<<endl;
x=0;
break;
}
x=1;
}
if(x==1)
cout<<"yes"<<endl;
}
return 0;
}