#include <bits/stdc++.h>
using namespace std;

int main(){
    cin.tie(0);
    ios_base::sync_with_stdio(0);
    //start here
    int N;cin >> N;
    vector<string> grid(N,string(N,'.'));
    for(int i = 1;i < N;i++){
        for(int j = 1; j <= N-i;j++){
            grid[i][j] = '#';
        }
    }
    for(auto i:grid) cout << i << '\n';
}

/*

...#
..#.
.#..
#...

...
.##
.#.

....
.###
.##.
.#..


.....
.####
.###.
.##..
.#...
*/