#include <iostream> #include <iomanip> using namespace std; int main(){ int cir,sum=0,ba,b = 0,newcir = 0,k; cin>>cir>>k; sum += cir; ba = cir; while(ba >= k){ newcir = ba/k; b =ba%k; ba = newcir + b; sum += newcir; } cout<<sum; }