05.Триъгълник

//URL FOR THE TASK: https://judge.softuni.bg/Contests/Practice/Index/642#4


#include <iostream>
#include <string>
using namespace std;

int main() {

    int n;
    cin >> n;

    int width = 4 * n + 1;
    int height = 2 * n + 1;

    cout << string(width, '#') << endl;

    int side_dots = 1;
    int inner_spaces = 1;

    for (int i = 0; i < n; i++)
    {
        int number_of_tags = (width - side_dots * 2 - inner_spaces) / 2;
        cout << string(side_dots, '.');
        cout << string(number_of_tags, '#');

        if (i == n / 2)
        {
            cout << string((inner_spaces - 3) / 2, ' ');
            cout << "(@)";
            cout << string((inner_spaces - 3) / 2, ' ');
        }
        else
        {
            cout << string(inner_spaces, ' ');
        }

        cout << string(number_of_tags, '#');
        cout << string(side_dots, '.') << endl;

        inner_spaces += 2;
        side_dots++;
    }
    for (int i = 0; i < n; i++)
    {
        cout << string(side_dots, '.');
        cout << string(width - side_dots * 2, '#');
        cout << string(side_dots, '.') << endl;
        side_dots++;
    }
    return 0;
}