Jakkara

#include <stdint.h>
#include <algorithm>
#include <iostream>
#include <vector>

int main() {
        int64_t a,b,c,d;std::cin>>a>>b>>c>>d;
        int64_t sum=a+b+c+d,best=sum;
        std::vector<int64_t>xs{a,b,c,d,sum/4-1,sum/4};
        for(int64_t x:xs)
            best=std::min<int64_t>(best,llabs(a-x)+llabs(b-x)+llabs(c-x)+llabs(d-x));
        std::cout<<best<<'\n';
}

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