using System;
using System.Collections;
using System.Collections.Generic;
using System.Linq;
using System.IO;

class Meguru
{

    public Meguru() { }
    public static int Main()
    {
        new Meguru().calc();
        return 0;
    }

    Scanner cin;

    void calc()
    {
        cin = new Scanner();
        int T = cin.nextInt();
        int A = cin.nextInt();
        int B = cin.nextInt();
        if (T < Math.Max(A, B))
        {
            Console.WriteLine("NO");
            return;
        }

        string s = "^>v<";

        int[] movey = new int[T];
        int[] movex = new int[T];
        for (int i = 0; i < T; i++)
        {
            if (A > 0) { movey[i] = 0; A--; }
            else if (i < T - 1) { movey[i] = 2; A++; }
            else { movey[i] = -1; }

            if (B > 0) { movex[i] = 1; B--; }
            else if (i < T - 1) { movex[i] = 3; B++; }
            else { movex[i] = -1; }
        }

        bool flag = true;
        for (int i = T - 1; i >= 0; i--)
        {
            if (movex[i] == -1 && movey[i] == -1)
            {
                for (int j = 0; j < i; j++)
                {
                    if (movex[j] != -1 && movex[j] != -1)
                    {
                        swap(ref movex[j], ref movex[i]);
                        break;
                    }
                }
                if (movex[i] == -1 && movey[i] == -1) flag = false;
            }
        }
        if (!flag) Console.WriteLine("NO");
        else
        {
            Console.WriteLine("YES");
            for (int i = 0; i < T; i++)
            {
                if (movey[i] != -1) Console.Write(s[movey[i]]);
                if (movex[i] != -1) Console.Write(s[movex[i]]);
                Console.WriteLine();
            }
        }

    }

    //swap
    void swap<T>(ref T a, ref T b)
    {
        T c = a;
        a = b;
        b = c;
    } 

}






class Scanner
{
    string[] s;
    int i;

    char[] cs = new char[] { ' ' };

    public Scanner()
    {
        s = new string[0];
        i = 0;
    }

    public string next()
    {
        if (i < s.Length) return s[i++];
        string st = Console.ReadLine();
        while (st == "") st = Console.ReadLine();
        s = st.Split(cs, StringSplitOptions.RemoveEmptyEntries);
        i = 0;
        return next();
    }

    public int nextInt()
    {
        return int.Parse(next());
    }

    public long nextLong()
    {
        return long.Parse(next());
    }

    public double nextDouble()
    {
        return double.Parse(next());
    }

}