#define _CRT_SECURE_NO_WARNINGS
#include <cstdio>
#include <cstdlib>
#include <vector>
#include <iostream>
#include <string>
#include <algorithm>
typedef unsigned long long ull;
typedef long long ll;
using namespace std;
int main() {
	// 先手必勝
	ull A, B;
	cin >> A >> B;
	if (A < B) {
		cout << "K" << endl;
	}
	else {
		cout << "S" << endl;
	}
}