import random

pile = int(raw_input("Size: "))

while True:
    user = int(raw_input("Your turn: "))
    pile = pile - user
    if pile < 0:
        print "You lost."
        break
    print "The pile becomes", pile, "computer moves now"
    computer = random.randrange(10)
    print "Computer withdraws", computer
    pile = pile - computer
    if pile < 0:
        print "The computer lost."
        break
    print "The pile becomes", pile, "it's your turn now"