Newton's Quest: Unlock the icon Question Newton's Quest: Unlock the Alien ShipAlien Ship

a,b,c=map(int,input().split())
add = a*pow(2,2) + b*pow(2,1) + c
if add==1 or add==2 or add==4:
    print("Yes! Ship Unlocked.")
else:
    print("No! Better luck next time.")