#include<iostream>
#include<string>
#include<algorithm>
#include<cctype>
#include<set>
#include<bitset>
#include<math.h>
#include<map>
#include<queue>
#include<iomanip>
using namespace std;
using ll = long long;

char solve(ll a, ll b){
    if (a < b) return 'K';
    else return 'S';
}

int main()
{
    ll a, b;
    cin >> a >> b;
    cout << solve(a, b) << endl;
}