using System;

namespace YukiCoderNo232
{
    class Program
    {
        static void Main()
        {
            string[] buffer = (Console.ReadLine()).Split(' ');
            int turn = int.Parse(buffer[0]);
            int posY = int.Parse(buffer[1]);
            int posX = int.Parse(buffer[2]);
            int posMax = Math.Max(posX, posY);
            if ((turn >= posMax) && (!((posX == 0) && (posY == 0) && (turn == 1))))
            {
                Console.WriteLine("YES");
                int step = turn - posMax;
                int dummyStepCount = (step / 2);
                for (int i = 0; i < dummyStepCount; i++)
                {
                    Console.WriteLine(">");
                    Console.WriteLine("<");
                }
                int posMin = Math.Min(posX, posY);
                int posDiff = Math.Abs(posY - posX);
                if ((step % 2) == 0)
                {
                    for (int i = 0; i < posMin; i++)
                    {
                        Console.WriteLine("^>");
                    }
                }
                else
                {
                    if (posMin > 0)
                    {
                        Console.WriteLine("^");
                        Console.WriteLine(">");
                    }
                    for (int i = 1; i < posMin; i++)
                    {
                        Console.WriteLine("^>");
                    }
                }
                if (posX > posY)
                {
                    for (int i = 0; i < posDiff; i++)
                    {
                        Console.WriteLine(">");
                    }
                }
                else if (posX < posY)
                {
                    for (int i = 0; i < posDiff; i++)
                    {
                        Console.WriteLine("^");
                    }
                }
            }
            else
            {
                Console.WriteLine("NO");
            }
        }
    }
}