using System; using System.IO; using System.Linq; using System.Collections; using System.Collections.Generic; using System.Numerics; using System.Text; using System.Text.RegularExpressions; using System.Threading.Tasks; using static System.Math; using Int = System.Int64; using Debug = System.Diagnostics.Debug; class P { static void Main() { var v = Regex.Match(Console.ReadLine(), @"(.)\1{2}"); Console.WriteLine(v.Success ? v.Value[0] == 'O' ? "East" : "West" : "NA"); } }