using System;
using System.IO;
using System.Linq;
using System.Text;
using System.Collections.Generic;
using System.Diagnostics;
using System.Numerics;
using Enu = System.Linq.Enumerable;

class Program
{
    static readonly int[] DX = { 0, 1, 0, -1, 1, -1, 1, -1 };
    static readonly int[] DY = { 1, 0, -1, 0, 1, 1, -1, -1 };
    static readonly string[] Move = new[] { "^", ">", "v", "<", "^>", "^<", "v>", "v<" };

    public void Solve()
    {
        int T = Reader.Int(), Y = Reader.Int(), X = Reader.Int();
        if (Math.Max(X, Y) > T || T == 1 && X == 0 && Y == 0)
        {
            Console.WriteLine("NO");
            return;
        }
        Console.WriteLine("YES");
        int cx = 0, cy = 0;
        while (T-- > 0)
        {
            for (int d = 0; d < DX.Length; d++)
            {
                int nx = cx + DX[d], ny = cy + DY[d];
                int dx = Math.Abs(X - nx), dy = Math.Abs(Y - ny);
                if (Math.Max(dx, dy) <= T && !(T == 1 && dx == 0 && dy == 0))
                {
                    Console.WriteLine(Move[d]);
                    cx = nx; cy = ny;
                    break;
                }
            }
        }
    }
}


class Entry { static void Main() { new Program().Solve(); } }
class Reader
{
    private static TextReader reader = Console.In;
    private static readonly char[] separator = { ' ' };
    private static readonly StringSplitOptions op = StringSplitOptions.RemoveEmptyEntries;
    private static string[] A = new string[0];
    private static int i;
    private static void Init() { A = new string[0]; }
    public static void Set(TextReader r) { reader = r; Init(); }
    public static void Set(string file) { reader = new StreamReader(file); Init(); }
    public static bool HasNext() { return CheckNext(); }
    public static string String() { return Next(); }
    public static int Int() { return int.Parse(Next()); }
    public static long Long() { return long.Parse(Next()); }
    public static double Double() { return double.Parse(Next()); }
    public static int[] IntLine() { return Array.ConvertAll(Split(Line()), int.Parse); }
    public static int[] IntArray(int N) { return Enu.Range(0, N).Select(i => Int()).ToArray(); }
    public static int[][] IntTable(int H) { return Enu.Range(0, H).Select(i => IntLine()).ToArray(); }
    public static string[] StringArray(int N) { return Enu.Range(0, N).Select(i => Line()).ToArray(); }
    public static string Line() { return reader.ReadLine().Trim(); }
    private static string[] Split(string s) { return s.Split(separator, op); }
    private static string Next() { CheckNext(); return A[i++]; }
    private static bool CheckNext()
    {
        if (i < A.Length) return true;
        string line = reader.ReadLine();
        if (line == null) return false;
        if (line == "") return CheckNext();
        A = Split(line);
        i = 0;
        return true;
    }
}