Perfect Numbers

#include<bits/stdc++.h>
using namespace std;
int main()
{
    int t,n;
    char ch;
    cin>>t;

    cin>>n;

    if(n==2 ||n==3 ||n==5 ||n==7 ||n==13 ||n==17 ||n==19)
    {
        cout<<"Yes"<<endl;

    }
    else
        cout<<"No"<<endl;


    for(int i =1 ; i<t; i++)
    {
        cin>>ch>>n;



        if(n==2 ||n==3 ||n==5 ||n==7 ||n==13 ||n==17 ||n==19)
        {
            cout<<"Yes"<<endl;

        }
        else
            cout<<"No"<<endl;
    }







    return 0;
}