codfes2017quala-d

codfes2017quala-d.cpp

signed main()
{
    std::ios::sync_with_stdio(false);
    std::cin.tie(0);
 
    int3(n, m, k);
 
    for (int i = 0; i < n; i++) {
        for (int j = 0; j < m; j++) {
            int a = (i+j) / k % 2, b = (i-j+m) / k % 2;
            if (a && b) {
                cout << "R";
            } else if (a) {
                cout << "G";
            } else if (b) {
                cout << "B";
            } else {
                cout << "Y";
            }
        }
        cout << endl;
    }
 
 
    return 0;
}