import sequtils, strutils
let a: seq[string] = stdin.readline.split
var ans: char
if a.count("0") == 2 or a.count("2") == 2:
  ans = 'E'
elif a.count("0") == 1 or a.count("1") > 0:
  ans = 'S'
else:
  ans ='P'
echo ans