Kasat

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

#define ll long long

using namespace std;


int main() {
    cin.sync_with_stdio(false);
    ll t, a, b, c, n;
    cin >> t;
    for (ll i = 0; i < t; ++i) {
        vector<ll> m;
        cin >> a >> b >> c >> n;
        m.push_back(a);
        m.push_back(b);
        m.push_back(c);
        sort(m.begin(), m.end());
        while (n != 0) {
            ll dif = m[2] - m[0];
            if (dif == 0) {
                if (n % 2 == 1) {
                    m[0]--;
                    m[2]++;
                }
                n = 0;
            } else if (dif != 1) {
                ll difa = m[1] - m[0];
                ll difb = m[2] - m[1];
                if (difa < difb) {
                    if (difa == 0) {
                        difb = difb*2 / 3;
                        if (difb*2 / 3 > n) {
                            difb = n;
                        }
                        m[0] += difb/2;
                        m[1] += difb/2;
                        m[1] += difb%2;
                        m[2] -= difb;
                        n -= difb;
                    } else {
                        difa = min(n,difa);
                        m[0]+= difa;
                        m[2]-= difa;
                        n -= difa;
                    }
                } else {
                    if (difb == 0) {
                        difa = difa*2 / 3;
                        if (difa > n) {
                            difa = n;
                        }
                        m[0] += difa;
                        m[1] -= difa/2;
                        m[1] -= difa%2;
                        m[2] -= difa/2;
                        n -= difa;

                    } else {
                        difb = min(n,difb);
                        m[0]+= difb;
                        m[2]-= difb;
                        n -= difb;
                    }

                }
            } else {
                n = 0;
            }
        }
        for (ll k : m ) {
            cout << k << ' ';
        }
        cout << '\n';
    }
    return 0;
}

Test 1

Group: 1

Verdict: WRONG ANSWER

Test 2

Group: 2

Verdict: ACCEPTED

Test 3

Group: 3

Verdict: ACCEPTED