#include <iostream>

using namespace std;

int main()
{
    int n,nr,i,j,m=0,k=0,suma=0;
    cout<<"n=";
    cin>>n;
    for(i=1;i<=n;i++){
        cout<<"nr=";
        cin>>nr;
        for(j=1;j<=nr;j++){
            if((nr%j)==0)k++;
        }
        if(k==2) suma=suma+nr;
        if(k>2){
            for(j=nr;j>1;j--)
                if((nr%j)==0) m=j;
            suma=suma+m;
        }
        k=0;
        }
    cout<<"suma="<<suma;
    return 0;
}