Jakkara

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

using namespace std;

int main() {
	ios_base::sync_with_stdio(0);

	vector<int> numbers;
	int number;
	for (size_t i = 0; i < 4; i++) {
		cin >> number;
		numbers.push_back(number);
	}

	sort(numbers.begin(), numbers.end());

	int median = (numbers[1] + numbers[2]) / 2;

	int ret = 0;

	for (size_t i = 0; i < 4; i++) {
		if (numbers[i] == median) continue;

		if (numbers[i] > median) {
			ret += numbers[i] - median;
		} else {
			ret += median - numbers[i];
		}
	}

	cout << ret;
	return 0;
}

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