#define _CRT_SECURE_NO_WARNINGS
#include <cstdio>
#include <cstdlib>
#include <vector>
#include <iostream>
#include <string>
#include <algorithm>
typedef unsigned long long ull;
using namespace std;
int main() {
	int S, F;
	cin >> S >> F;
	for (int i = 1;; i++) {
		if (S < i*F) {
			cout << i << endl;
			return 0;
		}
	}
}