#include <iostream>
 
using namespace std;
 
int main()
{
    int n, end = 0;
    long double sum = 0, total = 0;
 
    while (cin >> n)
    {
        if (n != 0)
        {
            sum += n;
            total += n;
            end = 0;
        }
 
        else
        {
            cout << sum << endl;
            sum = 0;
            end += 1;
        }
 
        if (end > 1)
            break;
    }
 
    cout << total << endl;
 
    return 0;
}

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11 8 2 -1 0
6 33 -9 10 0
12345678901 0
0