# program LeapYear.py
# This says if a year is a leap year
# Author:  Me

year = eval(input( "Enter a year: " ))
if year%400 == 0:
    isLeapYear = True
elif year%100 == 0:
    isLeapYear = False
elif year % 4 == 0:
    isLeapYear = True
else:
    isLeapYear = False

if isLeapYear:
    print( year, "is a leap year." )
else:
    print( "Nope,", year,  "is not a leap year." )