S005-AC.cc
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#include <iostream>
#include <cmath>
using namespace std;
bool isPrime(int a)
{
if(a == 2 || a == 3 || a == 5)
{
return true;
}
if(a == 1)
{
return false;
}
if(a%2)
{
if(a%3)
{
if(a%5)
{
for(int i = 2; i < (sqrt(a)+1); i++)
{
if(!(a%i))
{
return false;
}
}
return true;
}
}
}
return false;
}
int main()
{
int a,b;
cin >> a;
for(int i = 0; i < a; i++)
{
cin >> b;
if(isPrime(b))
{
cout << b << " is prime" << endl;
}
else
{
cout << b << " is not prime" << endl;
}
}
return 0;
}