#include <bits/stdc++.h>
using namespace std;

int main() {
	int n, k, yd = 0, sum = 0;
	cin >> n >> k;
	sum += n;
	while (n >= k) {
		yd = n % k;
		n /= 3;
		sum += n;


	}
	cout << sum;
	return 0;

}