#include <bits/stdc++.h>

using namespace std;

int main() {
    ios::sync_with_stdio(0);
    cin.tie(0);

    int n, m;
    cin >> n >> m;

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