**Armstrong Number**

If the sum of the cubes of the digits in a three digit number is equal to the number itself, then the number is called an Armstrong number.

E.g.: 153 is an Armstrong number because (1^{3})+(5^{3})+(3^{3}) = 153.

Write a program in Python to display all the Armstrong numbers between n1 and n2.

**Note:**

- If the starting and ending numbers are negative then display the message “Starting and ending numbers must be greater than or equal to zero” and stop the program.
- If the starting number is greater than the ending number, then display the message “Invalid input!! Ending number should be greater than starting number” and stop the program.
- Refer the sample input and output statements for more clarifications.

**Sample Input 1:**

Enter the starting and ending numbers:

5 500

**Sample Output 1:**

Armstrong numbers between 5 and 500 are:

153

370

371

407

**Sample Input 2:**

Enter the starting and ending numbers:

50 100

**Sample Output 2:**

Armstrong numbers between 50 and 100 are:

There is no Armstrong number between these numbers

**Sample Input 3:**

Enter the starting and ending numbers:

1 10

**Sample Output 3:**

Armstrong numbers between 1 and 10 are:

1

**Sample Input 4:**

Enter the starting and ending numbers:

-4 2

**Sample Output 4:**

Starting and ending numbers must be greater than or equal to zero

**Sample Input 5:**

Enter the starting and ending numbers:

100 6

**Sample Output 5:**Invalid input!! Ending number should be greater than starting number

**Code :-**

x,y=map(int,input("Enter the starting and ending numbers:\n").split(" ")) l=[] if x>=0 and y>=0 and x<y: print("Armstrong numbers between "+str(x)+" and "+str(y)+" are:") for i in range(x,y+1): s=0 c=0 temp=i while temp>0: digit=temp%10 s+=digit**3 temp//=10 if i==s: l.append(i) if len(l)>0: for i in l: print(i) else: print("There is no Armstrong number between these numbers") elif(x<0 or y<0): print("Starting and ending numbers must be greater than or equal to zero") elif(x>=0 and y>=0 and x>=y): print("Invalid input!! Ending number should be greater than starting number")

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