#include <stdio.h>

int main() {
	int n = 145;

	int sum = 0;
	for (int remainder = n; remainder > 0; remainder /= 10) {
		int lastDigit = remainder % 10;
		
		int factorial = 1;
		for (int i = 2; i <= lastDigit; i++) {
			factorial *= i;
		}

		sum += factorial;
	}

	if (sum == n) printf("Strong number");
	else printf("Not strong");
}