C :

#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);
}

C++ :

#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;
}

Python :

n,m = map(int,input().split()) 
n=n*1000
if n%m==0:
    print(n//m)
else:
    print(n//m+1)