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

int main() {
    int T, A, B;
    cin >> T >> A >> B;
    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());
    vector<string> ans(T);
    int x = 0, y = 0;
    for (int i = 0; i < T; i++) {
        ans[i] = updown[i] + leftright[i];
        if (updown[i] == "^")
            y++;
        else if (updown[i] == "v")
            y--;
        if (leftright[i] == ">")
            x++;
        else if (leftright[i] == "<")
            x--;
    }
    if (x == B && y == A) {
        cout << "YES" << endl;
        for (auto&& s : ans) {
            cout << s << endl;
        }
    } else
        cout << "NO" << endl;
}