#include <iostream>

using namespace std;

int main(int argc, char *argv[]) {
	double A, B;
	cin >> A >> B;
	bool ans = false;
	if (A >= B) {
		A /= B;
		A *= (A + 1.0e-10);
		long long g = (long long)A % 3;
		ans = g == 0;
	}
	cout << (ans ? "S" : "K") << endl;
	return 0;
}