@Test
	public void resolve() {
		int sum = 0;
		BigDecimal fac = new BigDecimal(1);
		for (int i = 1; i <= 100; i++) {
			fac = fac.multiply(new BigDecimal(i));
		}
		while (fac.doubleValue() >= 1) {
			sum += fac.remainder(new BigDecimal(10)).intValue();
			fac = fac.divide(new BigDecimal(10));
		}
		print(sum);
	}