use proconio::input; fn main() { input! { n: String, } let (offset, is_prime) = solve(&n); println!("{}\n{}", offset, if is_prime { "Yes" } else { "No" }); } fn solve(n: &str) -> (u32, bool) { if n == "2" { return (0, true); } let least_digit = n.chars().last().unwrap().to_digit(10).unwrap(); (least_digit % 2, false) }