#include<bits/stdc++.h>
using namespace std;
using ll = long long;
using P = pair<int,int>;
#define rep2(i,a,n) for(int i = (a);i < (n);i++)
#define rep(i,n) rep2(i,0,n)
#define INF (1LL << 60)

int main(void){
    ll a,b;
    cin >> a >> b;
    
    cout << (a / b) + 1 << endl;
}