#include <bits/stdc++.h>
using namespace std;

int main() {
    int T, A, B;
    cin >> T >> A >> B;
    if (T < A || T < B) {
        cout << "NO" << endl;
        return 0;
    }
    cout << "YES" << endl;
    vector<string> updown, leftright;
    for (int i = 0; i < A + (T - A) / 2; i++) {
        updown.emplace_back("^");
    }
    for (int i = 0; i < (T - A) / 2; i++) {
        updown.emplace_back("v");
    }
    for (int i = 0; i < B + (T - B) / 2; i++) {
        leftright.emplace_back(">");
    }
    for (int i = 0; i < (T - B) / 2; i++) {
        leftright.emplace_back("<");
    }
    if (updown.size() != T)
        updown.emplace_back("");
    if (leftright.size() != T)
        leftright.emplace_back("");
    reverse(leftright.begin(), leftright.end());
    for (int i = 0; i < T; i++) {
        cout << updown[i] << leftright[i] << endl;
    }
}