#include<bits/stdc++.h>
using namespace std;

int main(){
    string a,b;
    int a0,b0;
    cin >> a >> b;
    a0=a.back()-'0';b0=b.back()-'0';
    if(a.size()!=1&&b.size()!=1) cout << 'P' << endl;
    else if(a.size()!=1&&b.size()==1){
        if(b0>1) cout << 'P' << endl;
        else cout << 'S' << endl;
    }
    else if(a.size()==1&&b.size()!=1){
        if(a0>1) cout << 'P' << endl;
        else cout << 'S' << endl;
    }else{
        if(a0==b0&&(a0==2||a0==0)) cout << 'E' << endl;
        else if(a0>1&&b0>1) cout << 'P' << endl;
        else cout << 'S' << endl;
    }

    return 0;
}