#include<iostream>
#include<cmath>
using namespace std;
int main() {
	int n, i;
	cin >> n;
	cin >> i;
	float sum = 0;
	int count = 1;
	for (;;) {
		sum = i + n * count;
		int record = 0;
		while (record < n - 1) {
			sum = i + sum * n / (n - 1);
			if (sum - ceil(sum) != 0)
				break;
			record++;
		}
		if (record < n - 1) {
			count++;
		}
		else {
			break;
		}
	}
	float sum2 = n * count + i;
	for (int j = 1; j < n; j++) {
		sum2 = sum2 * n / (n - 1) + i;
	}
	cout << sum2;
	return 0;
}