#include<bits/stdc++.h>
#define int long long
using namespace std;
int a,b;
signed main(){
//	freopen("coin.in","r",stdin);
//	freopen("coin.out","w",stdout);
	cin>>a>>b;
	if(a<b)printf("K\n");
	else printf("S\n");
	return 0;
}