#include <iostream>
using namespace std;

int main()
{
    int n, m;
    cin >> n >> m;

    for (int i = 1; i <= n; i++)
    {
        if (i % 2 != 0)
        {
            for (int j = 0; j < m; j++)
            {
                cout << "#";
            }
        }
        else
        {
            if (i / 2 % 2 != 0)
            {
                for (int j = 1; j < m; j++)
                {
                    cout << "*";
                }
                cout << "#";
            }
            else
            {
                cout << "#";
                for (int j = 0; j < m - 1; j++)
                {
                    cout << "*";
                }
            }
        }
        cout << '\n';
    }

    return 0;
}