Story

Your online store likes to give out coupons for special occasions. Some customers try to cheat the system by entering invalid codes or using expired coupons.

Task

Your mission:
Write a function called checkCoupon which verifies that a coupon code is valid and not expired.

A coupon is no more valid on the day AFTER the expiration date. All dates will be passed as strings in this format: "MONTH DATE, YEAR".

Examples:

checkCoupon("123", "123", "July 9, 2015", "July 9, 2015")  ===  true
checkCoupon("123", "123", "July 9, 2015", "July 2, 2015")  ===  false

checkCoupon("123", "123", "July 9, 2015", "July 9, 2015")  ===  true
checkCoupon("123", "123", "July 9, 2015", "July 2, 2015")  ===  false

CheckCoupon("123", "123", "July 9, 2015", "July 9, 2015")  ==  true
CheckCoupon("123", "123", "July 9, 2015", "July 2, 2015")  ==  false

checkCoupon("123", "123", "July 9, 2015", "July 9, 2015")  == True
checkCoupon("123", "123", "July 9, 2015", "July 2, 2015")  == False