def stars(num):
    """
    Return a string containing num stars.
    This could also be done with "*" * num, but that
    doesn't demonstrate local variables.
    
    >>> print stars(5)
    *****
    >>> print stars(15)
    ***************
    """
    starline = ""
    for i in range(num):
        starline = starline + "*"
    return starline

num = int(raw_input("How many lines should I print? "))
for i in range(num):
    print stars(i+1)