#include <iostream>

using uint = unsigned int;

void solve() {
    uint a, b;
    std::cin >> a >> b;
    std::cout << (a >= b ? 'S' : 'K') << std::endl;
}

int main() {
    std::cin.tie(nullptr);
    std::ios::sync_with_stdio(false);

    solve();

    return 0;
}