#include <bits/stdc++.h>
using namespace std;
#define endl '\n'
#define int long long
#define LL long long
#define ULL unsigned long long
#define r(n) for (int i(1); i <= (n); ++i)
#define R(i, n) for (int i(1); i <= (n); ++i)
#define L(i, x, y) for (int i(x); i <= (y); ++i)
#define D(i, y, x) for (int i(y); i >= (x); --i)
#define Tie                  \
    ios::sync_with_stdio(0); \
    cin.tie(0);              \
    cout.tie(0)
int max(register const int a, register const int b)
{
    register const int x(a), y(b);
    return x > y ? x : y;
}
int min(register const int a, register const int b)
{
    register const int x(a), y(b);
    return x > y ? y : x;
}
const int N = 1e3 + 10;
const int MOD = 1e9 + 7;
const int INF = numeric_limits<int>::max();

int a, b;

signed main()
{
#ifdef ONLINE_JUDGE
    // freopen(".in", "r", stdin);
    // freopen(".out", "w", stdout);
#endif

    Tie;

    cin >> a >> b;

    if (a < b)
        cout << 'K';
    else
        cout << 'S';

    return 0;
}