#!usr/bin/env python

#import modules used here - sys is a very standard one
import sys


def area(base, height):
    return (base * height) / 2

if __name__ == '__main__':
    print('Area :', area(12,23))


def perimeter(side1, side2, side3):
	return (side1 + side2 + side3)

if __name__ == '__main__':
	print ('Perimeter :', perimeter(12,83,95))


#def name():
#	input("What is your name? ")

#if __name__ == '__main__':
#    print name()