#include <bits/stdc++.h> 
using namespace std;
int main(){
	int a,b,c,n,d,x;
	cin>>n;
	a=n%10;
	b=n/10%10;
	c=n/100;
	if(a<b) swap(a,b);
	if(a<c) swap(a,c);
	if(b<c) swap(b,c);
	d=a*100+b*10+c;
	x=c*100+b*10+a;
	cout<<d-x;
}
/**************************************************************
	Problem: 1680
	User: sucongyi
	Language: C++
	Result: Accepted
	Time:15 ms
	Memory:2072 kb
****************************************************************/