#include <iostream>
#include <fstream>
using namespace std;

int main() 
{
    ifstream input;
    ofstream output;
    
    input.open("adunare.in");

    int number = 0;
    int sum = 0;
    while (input >> number) {
        sum += number;
    }
    
    input.close();

    output.open("adunare.out");
    output << sum << endl;
    output.close();
    return 2;
}