# Lets say we want to print a combination of stars as shown below.

# *
# * *
# * * *
# * * * *
# * * * * *


# Let's say we want to print pattern which is opposite of above:
#  * * * * *
#    * * * *
#      * * *
#        * *
#          *


def main():
    lines = int(input("Enter no.of lines: "))
    pattern(lines)


def pattern(lines):
    for i in range(1, lines + 1):
        print("* " * i)
    print()
    for i in range(lines):
        print("  " * i, "* " * (lines - i))


if __name__ == "__main__":
    main()