#include <stdio.h>
int main(){
int n,x,c;
scanf("%d%d",&n,&x);    
c=(n*1000)/x;
if((n*1000)%x==0)
  printf("%d",c);
else 
  printf("%d",c+1);
}
/**************************************************************
	Problem: 1309
	User: admin
	Language: C
	Result: Accepted
	Time:15 ms
	Memory:1144 kb
****************************************************************/