/**
 * Binary Addition
 * 
 * Description
 * Write a program that, given two binary numbers represented as strings, prints
 * their sum in binary. The binary strings are comma separated, two per line. The
 * final answer should not have any leading zeroes. In case the answer is zero,
 * just print one zero i.e. 0
 * 
 * Input
 * Your program should read lines from standard input. Each line contains two binary
 * strings, separated by a comma and no spaces.
 * 
 * Output
 * For each pair of binary numbers print to standard output their binary sum, one
 * per line.
 * 
 * Example
 * 110011,1010 => 111101
 * 11010,00101001 => 1000011
 * 
 * Copyright © 2012-2021 HireVue
 * 
 */
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.stream.Stream;
import java.nio.charset.StandardCharsets;
 
public class Main {
  /**
   * Iterate through each line of input.
   */
  public static void main(String[] args) throws IOException {
    InputStreamReader reader = new InputStreamReader(System.in, StandardCharsets.UTF_8);
    BufferedReader in = new BufferedReader(reader);
    String line;
    while ((line = in.readLine()) != null) {
      try {
        // String[] inputs = line.split(",");
        // int lvalue = Integer.valueOf(inputs[0], 2);
        // int rvalue = Integer.valueOf(inputs[1], 2); 
        // System.out.println(Integer.toBinaryString(lvalue+rvalue));
 
        System.out.println(Integer.toBinaryString(Stream
        	.of(line.split(","))
        	.mapToInt(str -> Integer.valueOf(str, 2))
        	.sum()));
      } catch (IndexOutOfBoundsException | NumberFormatException e) {
        e.printStackTrace(System.err);
        continue;
      }
    }
  }
}

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MTEwMDExLDEwMTAKMTEwMTAsMDAxMDEwMDE=

110011,1010
11010,00101001