using System;
using static System.Console;
using System.Linq;
using System.Collections.Generic;
class Program
{
    static int NN => int.Parse(ReadLine());
    static long[] NList => ReadLine().Split().Select(long.Parse).ToArray();
    public static void Main()
    {
        var c = NList;
        var s = ReadLine();
        var tmp = 0;
        for (var i = s.Length - 1; i >= 0; --i)
        {
            if (s[i] == 'W') ++tmp;
            else if (s[i] == 'A') --tmp;
            if (tmp > 0)
            {
                WriteLine("No");
                return;
            }
        }
        tmp = 0;
        for (var i = 0; i < s.Length; ++i)
        {
            if (s[i] == 'C') ++tmp;
            else if (s[i] == 'A') --tmp;
            if (tmp > 0)
            {
                WriteLine("No");
                return;
            }
        }
        WriteLine("Yes");
    }
}