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

using namespace std;
int main() {
	int T, Y, X;
	cin >> T >> Y >> X;

	if (T < Y || T < X || (X == 0 && Y == 0 && T == 1)) {
		cout << "NO" << endl;
		return 0;
	}
	cout << "YES" << endl;
	int x = 0, y = 0;
	while (T > 0) {
		int dx = X - x, dy = Y - y;
		if (dx <= 1 && dy <= 1) {
			if (dx == 0 && dy == 0 && T % 2 != 0) {
				cout << "<" << endl;
				x--; T--; continue;
			}
			if (dy == 0 && T % 2 == 0) {
				cout << "v" << endl;
				y--; T--; continue;
			}
			if (dx == 0 && T % 2 == 0) {
				cout << "<" << endl;
				x--; T--; continue;
			}
			if (dx && dy && T % 2 == 0 && T >= 2) {
				cout << "^" << endl;
				y++; T--; continue;
			}
			if (T == 1) {
				string s;
				if (dx) s += ">";
				if (dy) s += "^";
				cout << s << endl;
				T--;
			} else {
				cout << ">" << endl << "<" << endl;
				T -= 2;
			}
			continue;
		}
		if (dx == dy) {
			cout << "^>" << endl;
			x++; y++; T--; continue;
		}
		if (dy > dx) {
			cout << "^" << endl;
			y++; T--;
		} else {
			cout << ">" << endl;
			x++; T--;
		}
	}
}