#include <stdio.h>

int main() {
	int input;
	
	printf("Enter an integer: ");
	scanf("%d", &input);

	int cubicSum;
	for (int remainder = input; remainder > 0; remainder /= 10) {
		int lastDigit = remainder % 10;
		cubicSum = cubicSum + (lastDigit * lastDigit * lastDigit);
	}

	if (input == cubicSum) printf("This is an armstrong number!");
	else printf("This number is not armstrong!");
}