#include <bits/stdc++.h>
#define rep(i,n)for(long long i=0;i<(n);i++)
using namespace std;
typedef long long ll;
const int MOD=1e9+7;
const int MAX = 1000000;
const int INF = 1e9;
const double pi=acos(-1);
using namespace std;

int main(){
  ll s,f; 
  cin >> s >> f;
  if(s%f==0)cout << s/f+1 << endl;
  else{
    cout << (s+f-1)/f<< endl;
  }
  return 0;
}