import * from /discrete;
// This should go in the discrete submodule, but is here for the test
fn lcm(a: Int, b: Int) -> Int {
let n = a * b;
return n / gcd(*a, *b);
}
fn droot(n: Int) -> Int {
if n < 10 {
return move(n);
} else {
let res = 0;
while n > 0 {
let last_digit = n % 10;
res = res + last_digit;
n := n - last_digit;
n := n / 10;
}
return droot(move(res));
}
}