use std::io::Read; fn read() -> T { let token: String = std::io::stdin() .bytes() .map(|c| c.ok().unwrap() as char) .skip_while(|c| c.is_whitespace()) .take_while(|c| !c.is_whitespace()) .collect(); token.parse().ok().unwrap() } fn main() { let mut n: i32 = read(); let mut i1 = 0; let mut mx = n; while n != 1 { if n % 2 == 0 { n = n / 2; } else { n = n * 3 + 1; } i1 += 1; mx = std::cmp::max(mx, n); } println!("{}", i1); println!("{}", mx); }