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#include <iostream>

using namespace std;

void rysujWize( int iloscPieter, char znak )
{
    for (int i = 1; i <= iloscPieter; ++i)
    {
        for (int j = 1; j <= i; ++j)
        {
            cout << znak;
        }
        cout << endl;
    }

    cout << "\n\n";
}

int main()
{
    rysujWize(5, 'O');
    rysujWize(7, 'x');
    rysujWize(15, 'v');
    rysujWize(2, '#');

    return 0;
}