First task

#include <iostream>
#include <stdio.h>
using namespace std;

int main() {
    int first, second, third, salary, min, max;
    cin >> first >> second >> third;
    if (first >= second && first >= third) {
        max = first;
    }
    if (second >= first && second >= third) {
        max = second;
    }
    if (third >= first && third >= second) {
        max = third;
    }
    if (first <= second && first <= third) {
        min = first;
    }
    if (second <= first && second <= third) {
        min = second;
    }
    if (third <= first && third <= second) {
        min = third;
    }
    salary = max - min;
    cout << salary;
}