#include<bits/stdc++.h>
#define int long long
using namespace std;
int const N=1e6+5;
int n,m,sum,cnt,t,ans,a,b;
signed main()
{
//	freopen("coin.in","r",stdin);
//	freopen("coin.out","r",stdout);
	ios::sync_with_stdio(0);
	cin.tie(0),cout.tie(0);
    cin>>a>>b;
    if(a<b)
    {
    	cout<<"K";
    	return 0;
	}
	cout<<"S";
	return 0;
}