#include <iostream>

using namespace std;

int main()
{
    int suma=0,a,n,i;
    cout<<"n=";
    cin>>n;
    for(i=1;i<=n;i++){
        cout<<"a=";
        cin>>a;
        if(a!=0){
        suma=suma+a;
        }
        else break;
    }
    cout<<"Suma="<<suma<<endl;

    return 0;
}