fn main() {
    let mut input = String::new();
    std::io::stdin().read_line(&mut input).ok();

    let mut input = input
        .trim()
        .split_whitespace()
        .map(|x| x.parse::<i32>().unwrap());

    let (s, f) = (input.next().unwrap(), input.next().unwrap());

    println!("{}", s / f + 1);
}