using System;

class Program
{
    static void Main()
    {
        var tmp = Console.ReadLine().Split();
        int t = int.Parse(tmp[0]);
        int a = int.Parse(tmp[1]);
        int b = int.Parse(tmp[2]);

        var key = new string[t];

        if (t == 1 && a == 0 && b == 0)
        {
            Console.WriteLine("NO");
            return;
        }

        if (a > t || b > t)
        {
            Console.WriteLine("NO");
            return;
        }
        else
        {
            Console.WriteLine("YES");

            for (int i = 0; i < a; i++)
            {
                key[i] += "^";
            }
            for (int i = 0; i < b; i++)
            {
                key[t - i - 1] += ">";
            }

            if (a <= t / 2)
            {
                for (int i = a; i < t - 1; i += 2)
                {
                    key[i] += "^";
                    key[i + 1] += "v";
                }
            }
            if (b <= t / 2)
            {
                for (int i = b; i < t - 1; i += 2)
                {
                    key[t - i - 1] += ">";
                    key[t - i - 2] += "<";
                }
            }
        }

        for (int i = 0; i < t; i++)
        {
            Console.WriteLine(key[i]);
        }
    }
}