#include <stdio.h>

int main () {
  char s[9] = "";
  
  int res = 0;
  
  int len = 0;
  
  res = scanf("%s", s);
  
  while (s[len] != '\0') {
    len++;
  }
  
  s[len-1] = (char)(((int)'0')+((int)'1')-((int)s[len-1]));
  printf("%s\n", s);
  return 0;
}