/**
 * @author Rock
 * @create 2020-08-15 9:06
 */
public class ShuChuSanJiaoXing {
    public static void main(String[] args) {
        int a = -1;
        for (int i = 0; i < 5; i++) {
            a += 2;
            for (int j = 1; j <= a; j++) {
                System.out.print("# ");
            }
            System.out.println();
        }
    }
}