class Program
   {
      static void Main(string[] args)
      {
         //inputting the two numbers .
         string number1, number2;
         int sumsize, p;
         number1 = Console.ReadLine();
         number2 = Console.ReadLine();
         //modifying the numbers to be from the same length .
         /*i added one to the sum array size(sumsize) to avoid 
           the over flow */
         if (number1.Length > number2.Length)
         {
            number2 = number2.PadLeft(number1.Length, '0');
            sumsize = number1.Length+1;
            p = number1.Length;
         }
         else
         {
            number1 = number1.PadLeft(number2.Length, '0');
            sumsize = number2.Length+1;
            p = number2.Length;
         }
         //declaring the two arrays and filling them with characters .
        /* the input is string so when converting it to int i found that 
            i should subtract 48 to get the right result */
         int[] arr1 = new int[number1.Length];
         for (int i = 0; i < number1.Length; i++)
            arr1[i] = Convert.ToInt32(number1[i] - 48);
         int[] arr2 = new int[number2.Length];
         for (int i = 0; i < number2.Length; i++)
            arr2[i] = Convert.ToInt32(number2[i] - 48);
         //displaying the two arrays .
         Console.WriteLine("\n1ST.Number is: \n");
         for (int i = 0; i < number1.Length; i++)
            Console.Write(arr1[i]);
         Console.WriteLine("\n\n2ND.Number is: \n");
         for (int i = 0; i < number2.Length;    i++)
            Console.Write(arr2[i]);
         Console.WriteLine();
         // till here everything is workin properly .. then -->
         int[] sum = new int[sumsize];
         int carry = 0;
         int holder;
        // the sum 
         for (int i = p-1; i >=0; i--)
         {
            holder=arr1[i] + arr2[i] + carry;
            if (holder < 10)
            {
               sum[sumsize-1] = arr1[i] + arr2[i] + carry;
               carry = 0;
            }
            else
            {
               sum[sumsize-1] = holder % 10;
               carry = 1;
 
            }
            sumsize--;
         }
         Console.WriteLine("sum is=");
         for(int i=0;i<sumsize;i++)
            Console.Write(sum[i]);
      }
   }
}

carry = 1;

carry = holder / 10;

            if (carry != 0)
            {
                sum[0] = carry;
            }

for(int i=0;i<sumsize;i++)

for (int i = 0; i < sum.Length; i++)

        int u = p + 1;
         int[] sum = new int[u];
         int carry = 0;
         int holder;
         for (int i = p - 1; i >= 0; i--)
         {
            u -= 1;
            holder = arr1[i] + arr2[i] + carry;
            if (holder < 10)
            {
               sum[u] = arr1[i] + arr2[i] + carry;
               carry = 0;
 
            }
            else
            {
               sum[u] += holder % 10;
               carry = holder / 10;
 
            }
 
         }
            if (carry != 0)
               sum[0] = carry;   
         Console.WriteLine("sum is=");
         for (int i = 0; i < sum.Length; i++)
            Console.Write(sum[i]);
         Console.WriteLine();
      }
   }
}