Omenat

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

using namespace std;

struct Omenat {
    long m;
    long n;
};

int main() {
    cin.sync_with_stdio(false);
    cin.tie(0);

    long n;
    cin >> n;
    vector<Omenat> p;
    long k = 0;
    long summa = 0;

    for (long i = 0; i < n; i++) {
        long o;
        cin >> o;

        if (o % 3 == 0) {
            k++;
        } else {
            Omenat om;
            om.m = o;
            om.n = 1;

            summa += o;
            long koko = p.size();
            for (long i = 0; i < koko; i++) {
                Omenat uusi = p[i];
                uusi.m += o;
                uusi.n += 1;
                p.push_back(uusi);
            }

            p.push_back(om);
        }
    }

    if (summa % 3 == 0) {
        cout << n << "\n";
    } else {
        long min_n = n - k;
        for (auto om : p) {
            if ((summa - om.m) % 3 == 0) {
                min_n = min(min_n, om.n);
            }
        }

        cout << n - min_n << "\n";
    }

    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: 1

Verdict: ACCEPTED

Test 7

Group: 2

Verdict: TIME LIMIT EXCEEDED

Test 8

Group: 2

Verdict: TIME LIMIT EXCEEDED

Test 9

Group: 2

Verdict: TIME LIMIT EXCEEDED

Test 10

Group: 2

Verdict: TIME LIMIT EXCEEDED

Test 11

Group: 2

Verdict: TIME LIMIT EXCEEDED

Test 12

Group: 2

Verdict: TIME LIMIT EXCEEDED

Test 13

Group: 3

Verdict: TIME LIMIT EXCEEDED

Test 14

Group: 3

Verdict: TIME LIMIT EXCEEDED

Test 15

Group: 3

Verdict: TIME LIMIT EXCEEDED

Test 16

Group: 3

Verdict: TIME LIMIT EXCEEDED

Test 17

Group: 3

Verdict: TIME LIMIT EXCEEDED

Test 18

Group: 3

Verdict: TIME LIMIT EXCEEDED