#include <iostream>
#include <cstdio>
#include <vector>
#include <algorithm>
#include <utility>
#include <string>

using namespace std;

int main() {
	int t, a, b;

	cin >> t >> a >> b;

	if (a > t || b > t || (t == 1 && a == 0 && b == 0)) {
		cout << "NO" << endl;
		return 0;
	}

	vector<string> turn(t);

	for (int i = 0; i < a; i++) {
		turn[i] += "^";
	}
	for (int i = 0; i < (t - a) / 2; i++) {
		turn[a + 2 * i]     += "^";
		turn[a + 2 * i + 1] += "v";
	}

	for (int i = 0; i < b; i++) {
		turn[t - 1 - i] += ">";
	}
	for (int i = 0; i < (t - b) / 2; i++) {
		turn[t - 1 - (b + 2 * i)]     += ">";
		turn[t - 1 - (b + 2 * i + 1)] += "<";
	}


	cout << "YES" << endl;
	for (int i = 0; i < t; i++) {
		cout << turn[i] << endl;
	}
	return 0;
}