using System;
using System.Collections.Generic;

class Program
{
    static void Main(string[] args)
    {
        var start = Console.ReadLine();
        var end = Console.ReadLine();
        var dic = new Dictionary<string, int>() { { "N", 0 }, { "E", 1 }, { "S", 2 }, { "W", 3 } };

        var diff = dic[end] - dic[start];
        if (diff >= 0) Console.WriteLine(diff);
        else Console.WriteLine(4 + diff);
    }
}