#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,c; cin>>n>>k; c=n/k; if(n%k==0){ cout<<c; } if (n%k>=1){ c=c+2; cout<<c; } return 0; }