Jakkara

#include <iostream>
#include <algorithm>
#include <vector>
#include <set>

using namespace std;

int main()
{
    vector<long> v;
    set<long> s;
    long sum = 0;
    for (int i = 0; i < 4; i++) {
        long x;
        cin>>x;
        sum += x;
        s.insert(x);
        v.push_back(x);
    }

    sort(v.begin(), v.end());
    long ans = 0;
    ans += v[1] - v[0];
    v[0] = v[1];
    ans += v[3] - v[2];
    v[3] = v[2];
    ans += 2 * (v[2] - v[1]);
    cout<<ans<<endl;
}

Test 1

Group: 1

Verdict: ACCEPTED

Test 2

Group: 1

Verdict: ACCEPTED

Test 3

Group: 1

Verdict: ACCEPTED

Test 4

Group: 1

Verdict: ACCEPTED

Test 5

Group: 1

Verdict: ACCEPTED

Test 6

Group: 2

Verdict: ACCEPTED

Test 7

Group: 2

Verdict: ACCEPTED

Test 8

Group: 2

Verdict: ACCEPTED

Test 9

Group: 2

Verdict: ACCEPTED

Test 10

Group: 2

Verdict: ACCEPTED

Test 11

Group: 3

Verdict: ACCEPTED

Test 12

Group: 3

Verdict: ACCEPTED

Test 13

Group: 3

Verdict: ACCEPTED

Test 14

Group: 3

Verdict: ACCEPTED

Test 15

Group: 3

Verdict: ACCEPTED