#include <iostream>

using namespace std;

int main()
{
    int a[1005],n,x,k=0;
    cin >> n;
    for(int i=1;i<=n;i++){
        cin >> x;
        if(x==1){
            k++;
        }
        if(x%2==0){
        while(x%2==0){
            x=x/2;
            if(x==1){
                k++;
            }
        }

       }

    }

    cout <<k;
    return 0;
}