print((function (s)
	if #s == 3 then
		if s == "0 0" or s == "2 2" then
			return "E"
		end
		local a, b = s:sub(1,1), s:sub(3,3)
		if a == "0" or a == "1" or b == "0" or b == "1" then
			return "S"
		end
	end
	return "P"
end)(io.stdin:read("*l")))