Family reunion

#include <iostream>

using namespace std;

int n, m, k, a[15];
int a1 = 15;

int main() {
    cin >> n >> m >> k;
    for (int i = 0; i < 15; ++i) {
        cin >> a[i];
        if (a[i] == 1) a1 = i;
    }
    if (a1 % 2 == 0) cout << "A\n";
    else cout << "B\n";
}

Test 1

Group: 1

Verdict: UNKNOWN

Test 2

Group: 2

Verdict: UNKNOWN

Test 3

Group: 3

Verdict: UNKNOWN