#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;
}