problema 9

#include <iostream>
using namespace std;
int main()
{
    int a,b,c,maxim,minim;
    cin>>a>>b>>c;
    maxim=a;
    minim=b;
    if (b>maxim)
        maxim=b;
    if (c>maxim)
        maxim=c;
    if (a<minim)
        minim=a;
    if (c<minim)
        minim=c;
    cout<<maxim-minim;
    return 0;
}