ModAdd

import java.util.*;
import java.io.*;
public class Task1
{
  public static void main(String[] args)   throws IOException
  {  
    BufferedReader reader = new BufferedReader(new InputStreamReader(System.in)); 
    String line1 = reader.readLine();
    String line2 = reader.readLine();
    if (line1.length() < line2.length())
    {
      String tmp = line1;
      line1 = line2;
      line2 = tmp;
    }        
    int[] a = new int [line1.length()];
    for (int i = 0; i < line1.length(); i++)
    {
      a[i] = line1.charAt(i) - '0';
    }
    int[] b = new int[line2.length()];
    for (int i = 0; i < line2.length(); i++)
    {
      b[i] = line2.charAt(i) - '0';
    }
    
    int[] result = new int[line1.length()];
    int a_length = a.length;
    int b_length = b.length;
    for (int i = 1; i <= line2.length() ;i++ )
    {
      int r = a[a_length-i]+b[b_length-i];
      if (r >= 10) {
        r -= 10;
      } // end of if
      result[result.length-i] = r;
    } // end of for
    for (int i = 1;i <= a.length - b.length ;i++ ) 
    {
      int r = a[a_length-b_length-i];
      result[result.length-b_length-i] = r;
    } // end of for
    print_array(result);  
  }       
  
  public static void print_array(int[] a)
  {
    boolean b = true;
    boolean zeros = false;
    StringBuffer buffer = new StringBuffer("");
    for (int i = 0;i < a.length ;i ++ ) 
    {
      if (a[i] != 0 || zeros) 
      {
        b = false;
        zeros = true;
        buffer.append(a[i]);//System.out.print(a[i]);
      } 
    }
    if (b)
    {
      System.out.print("0");
    } 
    else
      System.out.print(buffer);
  }
}

Test 1

Verdict: ACCEPTED

Test 2

Verdict: ACCEPTED

Test 3

Verdict: ACCEPTED

Test 4

Verdict: ACCEPTED

Test 5

Verdict: ACCEPTED

Test 6

Verdict: ACCEPTED

Test 7

Verdict: ACCEPTED

Test 8

Verdict: ACCEPTED

Test 9

Verdict: ACCEPTED

Test 10

Verdict: ACCEPTED