import random


def start():
    print ("The computer will give you an amount.")
    while game():
        pass


def game():

    print ("Enter coin values(one by one) that add up to the ammount.")
    print ("You can use coin values of 1, 2, 5 and 10. when finished press ENTER\n")

    coin_value = ['', '1', '2', '5', '10']
    total = 0
    amount = random.randint(1,99)         #generates a random amount
    print ("AMOUNT : ", amount, "\n")
    c1 = input("Enter first coin : ")

    while c1 not in coin_value:
        c1 = input("Pls enter coins of value 1, 2, 5 ,10 or press ENTER : ")

    if c1 != '' :
        c1_value = int(c1)       #converting str to int
        total = total + c1_value

        c_nxt = 0
        while c_nxt != '' :
            c_nxt = input("Enter next coin : ")

            while c_nxt not in coin_value:
                c_nxt = input("Pls enter coins of value 1, 2, 5, 10 or press ENTER : ")

            if c_nxt != '':
                c_nxt_value = int(c_nxt)       #converting str to int
                total = total + c_nxt_value
            else:
                print ("\nTotal value you entered is", total, "\n")

                if total == amount :
                    print ("You WON!!!")

                elif total > amount :
                    exc = total - amount
                    print ("Your entered value EXCEEDS the required value by", exc)
                    print ("\nYou LOST!!!")

                elif total < amount:
                    lss = amount - total
                    print ("Your entered value is LESS THAN the required value by", lss)
                    print ("\nYou LOST!!!")


    return retry()


def retry():
    r = input("Retry? (y/n) : ")

    while r not in ['y', 'Y','n','N']:
        r = input("Pls enter Y/N : ")

    if r == 'N' or r == 'n':
        pass

    else:
        game()

if __name__ == '__main__':
    start()