#include<bits/stdc++.h>
using namespace std;
int main(){
	int n,g,s,b,x,y,c;
    cin>>n;
    g=n%10;
    s=n/10%10;
    b=n/100;
    if(g<s) swap(g,s);
	if(g<b) swap(g,b);
	if(s<b) swap(s,b);
	x=g*100+s*10+b;
	y=b*100+s*10+g;
	c=x-y;
	cout<<c<<endl;
    return 0;
}
/**************************************************************
	Problem: 1680
	User: xiaojingxuan
	Language: C++
	Result: Accepted
	Time:9 ms
	Memory:2072 kb
****************************************************************/