'''age = int(input())

if age >= 21:
    print('You can drink')
    print('Still in if condition')
else:
    print('Stop!!! You cannot drink')
    
print('You\'re outside condition. Will always be executed')'''

num = int(input('Enter a number: '))

if num > 0:
    print("Positive number")
elif num == 0:
    print('Zero')
else:
    print('Negative number')