Untitled

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