#include<stdio.h> int main(){ int num,temp; int max_digit=0,min_digit=9; scanf("%d",&num); temp=num; while(temp!=0){ int digit=temp%10; if(digit>max_digit){ max_digit=digit; } if(digit<min_digit){ min_digit=digit; } temp/=10; } int a=max_digit-min_digit; printf("%d\n",a); return 0; }