import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.PrintWriter;
import java.util.*;

public class Main {

    void solve() throws IOException {
        int t = ni(), a = ni(), b = ni();

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

        if (Math.max(a, b) > t) {
            out.println("NO");
            return;
        }

        out.println("YES");

        boolean flg1 = t % 2 != a % 2;
        boolean flg2 = t % 2 != b % 2;

        for (int i = 0; i < t; i++) {
            if (flg1 && i == 0) {

            } else if (i < (t + a) / 2 + (flg1 ? 1 : 0)) {
                out.print('^');
            } else {
                out.print('v');
            }

            if (flg2 && i == t - 1) {

            } else if (i < (t + b) / 2) {
                out.print('>');
            } else {
                out.print('<');
            }

            out.println();
        }
    }

    String ns() throws IOException {
        while (!tok.hasMoreTokens()) {
            tok = new StringTokenizer(in.readLine(), " ");
        }
        return tok.nextToken();
    }

    int ni() throws IOException {
        return Integer.parseInt(ns());
    }

    long nl() throws IOException {
        return Long.parseLong(ns());
    }

    double nd() throws IOException {
        return Double.parseDouble(ns());
    }

    String[] nsa(int n) throws IOException {
        String[] res = new String[n];
        for (int i = 0; i < n; i++) {
            res[i] = ns();
        }
        return res;
    }

    int[] nia(int n) throws IOException {
        int[] res = new int[n];
        for (int i = 0; i < n; i++) {
            res[i] = ni();
        }
        return res;
    }

    long[] nla(int n) throws IOException {
        long[] res = new long[n];
        for (int i = 0; i < n; i++) {
            res[i] = nl();
        }
        return res;
    }

    static BufferedReader in;
    static PrintWriter out;
    static StringTokenizer tok;

    public static void main(String[] args) throws IOException {
        in = new BufferedReader(new InputStreamReader(System.in));
        out = new PrintWriter(System.out);
        tok = new StringTokenizer("");
        Main main = new Main();
        main.solve();
        out.close();
    }
}