#include<bits/stdc++.h>
using namespace std;
int main(){
	int n,x,a,b;
	scanf("%d %d",&n,&x);
	b=n*1000;
	a=(b+x-1)/x;
	printf("%d",a);
	return 0;
}
/**************************************************************
	Problem: 1309
	User: toughuatao1
	Language: C++
	Result: Accepted
	Time:12 ms
	Memory:2072 kb
****************************************************************/