#![allow(unused_imports)]
#![warn(non_snake_case)]
use proconio::input;
use proconio::marker::*;
use std::cmp::*;
use std::collections::*;

fn main() {
    input! {
        S: usize,
        F: usize,
    }
    
    let ans = solve(S, F);
    
    println!("{}", ans)
}

fn solve(S: usize, F: usize) -> usize {
    S / F + 1
}