#include <iostream>
#include <string>
using namespace std;

int main() {
  string a, b;
  cin >> a >> b;

  if (a.size()==1 && a[0]-'0'<=1 && !(a[0]-'0'==0 && b[0]-'0'==0)) {
    cout << 'S' << endl;
  } else if (b.size()==1 && b[0]-'0'<=1 && !(a[0]-'0'==0 && b[0]-'0'==0)) {
    cout << 'S' << endl;
  } else if ((a.size()==1 || b.size()==1) && ((a[0]-'0'==2 && b[0]-'0'==2) || (a[0]-'0'==0 && b[0]-'0'==0))) {
    cout << 'E' << endl;
  } else {
    cout << 'P' << endl;
  }
}