#include <bits/stdc++.h>
using namespace std;

int main()
{
	int n,x;
	cin>>n>>x;
	n = n * 1000;
	cout<<(int)ceil(n * 1.0 / x)<<endl;

	return 0;
}
/**************************************************************
	Problem: 1309
	User: admin
	Language: C++
	Result: Accepted
	Time:13 ms
	Memory:2072 kb
****************************************************************/