use std::io::{self, Read}; #[derive(Debug)] struct Input { a: i32, b: i32, } fn next_token(cin_lock: &mut io::StdinLock) -> String { cin_lock .by_ref() .bytes() .map(|c| c.unwrap() as char) .skip_while(|c| c.is_whitespace()) .take_while(|c| !c.is_whitespace()) .collect::() } fn read_input(cin_lock: &mut io::StdinLock) -> Input { Input { a: next_token(cin_lock).parse().unwrap(), b: next_token(cin_lock).parse().unwrap(), } } fn solve(input: Input, _cin_lock: &mut io::StdinLock) { let answer = (input.b + input.a - 1) / input.a; println!("{}", answer); } fn main() { let cin = io::stdin(); let mut cin_lock = cin.lock(); let input = read_input(&mut cin_lock); solve(input, &mut cin_lock); }