#using System;
#using System.Console;

static void main(string[] args)
{
    int a = Int32.Parse(args[0]);
    int i = 0;
    bool asc = true;
    while(true)
    {
        for(int i1 = 0; i1 != i; i1++)
        {
            Write("*");
        }
        Write("\n");
        if(i==a){asc = false;}
        if(asc)
        {
            i++
        }else
        {
            i--
        }
        if(i==0){break;}
    }
}