#include <iostream>
#include <fstream>
#include <string>
#include <vector>

using namespace std;

int main() {
	ifstream fin("input.txt");
	ofstream fout("output.txt");

	string s;
	int sum = 0;
	getline(fin, s);
	for (int i = 0; i < s.size(); ++i) {
		if (s[i] != ' ') sum += s[i] - (int)'0';
	}
	fout << sum;
	sum = 0;
	while (!fin.eof()) {
		getline(fin, s);
		for (int i = 0; i < s.size(); ++i) {
			if (s[i] != ' ') sum += s[i] - (int)'0';
		}
		fout << "\n" << sum;
		sum = 0	;
	}

	fin.close();
	fout.close();
	return 0;
}