python

4. Write a program asks the user to enter a positive integer composed of only two digits like 53, 18, then output the total of the number's digits. The program should display "Invalid input if the number entered does not composed of two digits. 5- An Armstrong number is a number that is equal to the sum of cubes of its digits. For example 153= 153= 153 = (1*1*1)+(5*5*5)+(3*3*3) =1+125+27, and 371 = (3*3*3)+(7*7*7)+(1*1*1) = 27+343+1. Write a program to read a number from the user composed of three digits, if it is not three-digits, the program should display Invalid input. The program check if the number is Armstrong or not