# your code goes here
import random
 
los1 = random.randrange(10)
los2 = random.randrange(10)
a = "\t"+str(los1)+" + "+str(los2)+" = "
w = int(input(a))
g = los1+los2
if g == w:
    print("\tDobrze!")
else:
    print("\tŹle!")