#include <iostream>
#include <vector>
#include <algorithm>
#include <map>
#include <queue>
#include <cstdio>
#include <ctime>
#include <assert.h>
#include <chrono>
#include <random>
#include <numeric>
#include <set>
using namespace std;
typedef long long int ll;
typedef unsigned long long ull;


int main(){
    cin.tie(nullptr);
    ios::sync_with_stdio(false);
    ll a,b; cin >> a >> b;
    if(b<=a)printf("S\n");
    else printf("K\n");
}