no1 = 10
no2  = 20

if no1 > no2:
    print("no1 is greater than no2")
    
else:
    print("no2 is greater than no1")
    
x = int(input("Enter a number: "))

if x>0:
    print("x is positive")
    if x>=18:
        
        print("x is greater than or equal to 18")
    else:
        print("x is less than 18")    
else:
    print("x is negative")        
    
    