#part 1: write a program that inputs one integer and checks if the int is 
#perfect 
#or not
#perfect number is the number that sum of proper divisors equals to the 
#number itself

#part 2: write a program that randomly generates integer N (you can decide 
#on the range) and prints all perfect numbers between 1 and N


#Part I
num=int(input("enter number "))
sum_div=0

for i in range(1,num):
	if(num%i==0):
		sum_div=sum_div+i

if(sum_div==num):
	print(num,"is perfect")
else:
	print(num,"is not perfect")