Armstrong Number

Problem Statement

Write a C++ program that reads a 3-digit integer N and checks whether it is an Armstrong number (sum of cubes of digits equals the number itself).

A single positive integer N.

Print 'Armstrong' or 'Not Armstrong'.

100 <= N <= 999

Armstrong

1^3 + 5^3 + 3^3 = 1 + 125 + 27 = 153.

#include <iostream>

int main() {
    int n;
    if (std::cin >> n) {
        // Write your code here
    }
    return 0;
}