using System;
using System.Collections.Generic;
using static System.Console;
using System.Linq;

class yc299
{
    static int[] NList => ReadLine().Split().Select(int.Parse).ToArray();
    static int[][] NMap(int n) => Enumerable.Repeat<int>(0, n).Select(_ => NList).ToArray();
    static void Main()
    {
        var n = ReadLine().Split();
        WriteLine(A(int.Parse(n[0]), int.Parse(n[1]), n[2]) ? "YES" : "NO");
    }
    static bool A(int a, int b, string c)
    {
        switch (c)
        {
            case "<":
                return a < b;
            case ">":
                return a > b;
            default:
                return a == b;
        }
    }
}