#include<iostream>
#include<algorithm>
#include<cstdio>
#include<cstdlib>
#include<vector>
#include<map>
#include<queue>
#include<string>
#include<sstream>
#include<cmath>
#include<numeric>
using namespace std;


int main(){

  string a, b;
  cin >> a >> b;

  if( a == b ) cout << "E" << endl;
  else if( a[0] == '0' || b[0] == '0' ) cout << "S" << endl;
  else cout << "P" << endl;

  return 0;
}