import java.util.*;

public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int t = sc.nextInt();
        int a = sc.nextInt();
        int b = sc.nextInt();
        if (t < a || t < b) {
            System.out.println("NO");
            return;
        }
        if (t == 1 && a + b == 0) {
            System.out.println("NO");
            return;
        }
        int[][] steps = new int[t][2];
        int start = 0;
        int end = t - 1;
        while (end - start > a + b) {
            steps[start][0] = 1;
            steps[start + 1][0] = -1;
            steps[end][1] = 1;
            steps[end - 1][1] = -1;
            start += 2;
            end -= 2;
        }
        for (int i = 0; i < a; i++) {
            steps[start + i][0] = 1;
        }
        for (int i = 0; i < b; i++) {
            steps[end - i][1] = 1;
        }
        StringBuilder sb = new StringBuilder();
        sb.append("YES\n");
        for (int i = 0; i < t; i++) {
            if (steps[i][0] == 1) {
                sb.append("^");
            } else if (steps[i][0] == -1) {
                sb.append("v");
            }
            if (steps[i][1] == 1) {
                sb.append(">");
            } else if (steps[i][1] == -1) {
                sb.append("<");
            }
            sb.append("\n");
        }
        System.out.print(sb);
    }
}