#define _CRT_SECURE_NO_WARNINGS
#define debug(tl) cerr<<#tl<<' '<<tl<<'\n';
#include <iostream>
#include <stdio.h>
#include <math.h>
//#include <windows.h>
using namespace std;
#define all(d) d.begin(), d.end()
typedef long double ld;
signed main() {
/*
#ifdef _DEBUG
    freopen("input.txt", "r", stdin);
    freopen("output.txt", "w", stdout);
#endif
*/
    ios_base::sync_with_stdio(false);
    cin.tie(nullptr);
    cout.tie(nullptr);
    int w = 120, h = 30;
    ld k1 = (ld)w / h, k2 = 11.00/24.00;
    char* scr = new char[w * h + 1];
    scr[w * h] = '\0';
    for (int d = 0; d < 1000000; d++) {
        for (int i = 0; i < w; i++) {
            for (int j = 0; j < h; j++) {
                ld x = (ld)i / w * 2.0 - 1.0, y = (ld)j / h * 2.0 - 1.0;
                char c = ' ';
                x *= k1, x *= k2;
                x += tan(d*0.0008);
                if (x * x + y * y <= 0.5 && x * x + y * y >= 0.20) c = '@';
                scr[i + j * w] = c;
            }
        }
        printf(scr);
    }
}