#include <iostream>
using namespace std;
int main()
{
    int n , m , u ;
    cin >> n >> m;
    u = 1;
    for ( int i = 0 ; i < n ; i ++ )
    {
            int l = u / 2;
            if ( u % 2 == 1 )
            {
               for ( int g = 0 ; g < m ; g ++ )
               {
                  cout <<"#";
               }
            }
            else if ( l % 2 == 1 )
            {
                for ( int r = 0 ; r < m - 1 ; r ++ )
                {
                    cout <<"*";
                }
                cout <<"#";
            }
            else 
            {
                cout <<"#";
                for ( int k = 0 ; k < m - 1 ; k ++ )
                {
                    cout <<"*";
                }
            }

            u ++;
            cout <<'\n';
        
    }

    return 0;
}