package StringAndTextProcessing.Exercises;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;

public class SumBigNumbers {
    public static void main(String[] args) throws IOException {
        BufferedReader reader = new BufferedReader(new InputStreamReader(System.in));

        String number1 = reader.readLine();
        String number2 = reader.readLine();

        StringBuilder result = new StringBuilder();
        int i1 = number1.length() - 1;
        int i2 = number2.length() - 1;

        int firstNum = 0;
        int secondNum = 0;

        int remainder = 0;
        for (int i = Math.max(number1.length(), number2.length()); i > 0; i--) {
        int sum = 0;
            if (i1 >= 0) {
                firstNum = Integer.parseInt(String.valueOf(number1.charAt(i1)));
            }
             else {
                 firstNum = 0;
            }
            if (i2 >= 0) {
                secondNum = Integer.parseInt(String.valueOf(number2.charAt(i2)));
            } else {
                secondNum = 0;
            }
            i1--;
            i2--;
            sum += firstNum + secondNum;
            sum += remainder;

            if (sum >= 10){
                sum -= 10;
                result.append(sum);
                remainder = 1;
            } else {
                result.append(sum);
                remainder = 0;
            }


        }
        if (remainder != 0) {
            result.append(remainder);
        }
        result.reverse();
        System.out.println(result);


    }
}