import readline

fn check_divisibility(e int, g int) {
	b := e / 10
	c := e % 10
	d := b - 2 * c
	mut f := g
	if d > 99 {
		f = f + 1
		check_divisibility(d, f)
	} else {
		if d % 7 == 0 {
			println([d, f])
		} else {
			println('The number is not divisible by 7')
		}
	}
}

fn main() {
	mut r := readline.Readline{}
	answer := r.read_line('What is your number: ')!

	a := answer.int()

	if a > 99 {
		check_divisibility(a, 1)
	}
}