package com;
import java.io.BufferedReader;
import java.io.InputStreamReader;
public class Summa {
    public static void main(String[] args) throws java.io.IOException {
        for(;;) {
            BufferedReader reader=new BufferedReader(new InputStreamReader(System.in));
            String ch=reader.readLine(); String ch1=reader.readLine();
            if (ch=="summa" || ch1=="summa") break;
            int value=Integer.parseInt(ch); int value1=Integer.parseInt(ch1);
            System.out.println("Сумма чисел: "+(value+value1));
        }
    }
}