using System.Diagnostics;
using System.Numerics;

public class Program
{
    public static void Main()
    {

        //int num = int.Parse(Console.ReadLine() ?? string.Empty);
        string[] str = (Console.ReadLine() ?? string.Empty).Trim().Split(' ');
        //string str = Console.ReadLine() ?? string.Empty;

        int a = int.Parse(str[0]);
        int b = int.Parse(str[1]);

        char c = char.Parse(str[2]);

        if(c == '=')
        {
            if(a == b)
            {
                Console.WriteLine("YES");
            }
            else
            {
                Console.WriteLine("NO");
            }
        }
        else if(c == '<')
        {
            if(a < b)
            {
                Console.WriteLine("YES");
            }
            else
            {
                Console.WriteLine("NO");
            }
        }
        else
        {
            if(a > b)
            {
                Console.WriteLine("YES");
            }
            else
            {
                Console.WriteLine("NO");
            }

        }

    }
}