#include<bits/stdc++.h>
using namespace std;
int main(){
	int n,x,j;
	cin>>n>>x;
	n*=1000;
	j=ceil(n*1.0/x);
	cout<<j;
	return 0;
}

/**************************************************************
	Problem: 1309
	User: tangkaixuan
	Language: C++
	Result: Accepted
	Time:10 ms
	Memory:2072 kb
****************************************************************/