#include<bits/stdc++.h>
using namespace std;
int main(){
	int n,x,b;
	cin>>n>>x;
	b=(n*1000+x-1)/x;
	cout<<b;
}

/**************************************************************
	Problem: 1309
	User: xuezihong1
	Language: C++
	Result: Accepted
	Time:12 ms
	Memory:2072 kb
****************************************************************/