Wa!

#include<iostream>

using namespace std;

int main()
{
    int n, k,temp, maximum,remains, mod;
    while(cin >> n >> k)
    {
        maximum=0;
        remains=0;
        temp=n;
        while(temp>k)
        {

            maximum+=temp/k;
            remains=temp/k;
            mod=temp%k;
            temp=remains+mod;
        }
        maximum+=n;
        cout << maximum << endl;
    }
}