using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace Calc
{
	class Program
	{
		static void Main()
		{
			var InputData = Console.ReadLine().Split(' ').ToList();

			if (InputData[0] == "0" && InputData[1] == "0")
			{
				Console.WriteLine("E");
				return;
			}

			if (InputData.Where(value => value == "0" || value == "1").Count() > 0)
			{
				Console.WriteLine("S");
				return;
			}

			if(InputData[0] == InputData[1])
			{
				Console.WriteLine("E");
				return;
			}


			Console.WriteLine("P");
		}
	}
}