#include <iostream>
using namespace std;
int main()
{
    int n, m;
    cin >> n >> m;

    for (int i = 0; i < n; i++) 
	{
        if (i % 4 == 0) 
		{
            for (int j = 0; j < m; j++) 
			{
                cout << "#";
            }
        }
        else if (i % 4 == 1) 
		{
            for (int j = 0; j < m - 1; j++) 
			{
                cout << "*";
            }
            cout << "#";
        }
        else if (i % 4 == 2) 
		{
            for (int j = 0; j < m; j++) 
			{
                cout << "#";
            }
        }
        else 
		{
            cout << "#";
            for (int j = 0; j < m - 1; j++) 
			{
                cout << "*";
            }
        }
        cout << endl;
    }

    return 0;
}