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

void fail() {
    std::cout << "NO\n";
    std::exit(0);
}

void solve() {
    int t, a, b;
    std::cin >> t >> a >> b;

    std::vector<std::string> xs(t, ""), ys(t, "");

    {
        if (a > t) fail();
        for (int i = 0; i < a; ++i) xs[i].push_back('>');
        for (int i = a; i + 1 < t; i += 2) {
            xs[i].push_back('>');
            xs[i + 1].push_back('<');
        }
        std::reverse(xs.begin(), xs.end());
    }

    {
        if (b > t) fail();
        for (int i = 0; i < b; ++i) ys[i].push_back('^');
        for (int i = b; i + 1 < t; i += 2) {
            ys[i].push_back('^');
            ys[i + 1].push_back('v');
        }
    }

    if (xs.front().empty() && ys.front().empty()) fail();

    std::cout << "YES\n";
    for (int i = 0; i < t; ++i) {
        std::cout << xs[i] << ys[i] << "\n";
    }
}

int main() {
    std::cin.tie(nullptr);
    std::ios::sync_with_stdio(false);

    solve();

    return 0;
}