#include<iostream> // cin\cout\endl #include<cstdio> //scanf()\printf() #include<cstring> // strcpy()\strcat()\strcmp()\strlen()\memset() #include<cmath> //sqrt()\pow()\abs()\ceil()\floor()\max()\min() using namespace std; int main(){ int n,k,z=0; cin>>n>>k; if(n%k>1){ z=n/k+2; } else{ z=n/k+1; } cout<<z<<endl; return 0; }