using System;
using System.Text;
namespace y
{
    class Program
    {
        static void Main(string[] args)
        {
            var n = Console.ReadLine().Split()[0];
            var sb = new StringBuilder();
            for (int i = 0; i < 2; i++)
            {
                sb.Append(Console.ReadLine());
            }
            Console.WriteLine(sb.ToString().Contains("LOVE") ? "YES" : "NO");
        }
    }
}