##from turtle import *
##
##def polygon(size, sides):
##     for i in range(sides):
##          forward(size)
##          right(360 / sides)
##
##polygon(100, 40)

def dating_age(age):
     min_age = age / 2 + 7
     max_age = (age - 7) * 2
     print("Given your age of " + str(age))
     print("Min dating age: " + str(min_age))
     print("Max dating age: " + str(max_age))

age = int(raw_input("What's your age?"))
dating_age(age)
dating_age(17)

print(13 * 4)
print(2 ** 4)

jane_grade1 = float(raw_input("Jane's first grade?"))
jane_grade2 = float(raw_input("Jane's second grade?"))
jane_average = (jane_grade1 + jane_grade2) / 2.0
print("Jane's grade: " + str(jane_average) + "%")