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#include <stdio.h>
#include <string.h>
#include <stdlib.h>

#ifdef __cplusplus
extern "C" {
#endif

int main(void)
{

  static char a [5000 + 1];

  static char b [sizeof(a)];

  static char c [sizeof(a) + 1];

  char * out = c + sizeof(c);

  size_t a_len, b_len;

  int carry = 0;

  if (scanf("%s %s", a, b))
  {
  }

  a_len = strlen(a);

  b_len = strlen(b);

  *--out = '\0';

  while (a_len || b_len)
  {
    int a_v = a_len ? a[--a_len] : '0';

    int b_v = b_len ? b[--b_len] : '0';

    carry += a_v - '0' + b_v - '0';

    if (carry < 10)
    {
      *--out = '0' + carry;

      carry = 0;
    }
    else
    {
      *--out = '0' + carry - 10;

      carry = 1;
    }
  }

  if (carry)
  {
    *--out = '0' + carry;
  }

  puts(out);

  return EXIT_SUCCESS;
}

#ifdef __cplusplus
}
#endif