#include <iostream>
 
using namespace std;
 
short liczby[25];
short licznik=0;
short suma;
long long s;
 
int main()
{
    while(cin>>liczby[licznik])
    {
        licznik++;
    }
    for(int i=0; i<licznik; i++)
    {
        switch(liczby[i])
        {
        case 0:
            {
                cout<<suma<<endl;
                suma=0;
                break;
            }
        default:
            {
                suma+=liczby[i];
                s+=liczby[i];
            }
        }
    }
    cout<<s<<endl;
 
    return 0;
}
 

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MTEgOCAyIC0xIDAKNiAzMyAtOSAxMCAwCjA=

11 8 2 -1 0
6 33 -9 10 0
0