#include <bits/stdc++.h>
using namespace std;
int main() {
	int T, A, B;
	cin >> T >> A >> B;
	int n = T - max(A, B); // はみ出す分のチェビシェフ距離
	if(n < 0) {
		cout << "NO" << endl;
		return 0;
	}
	cout << "YES" << endl;
	vector<string> C;
	int p = A - B; string c = p < 0 ? ">" : "^";
	for(int i = 0; i < abs(p); i++) C.push_back(c);
	for(int i = 0; i < min(A,B); i++) C.push_back("^>");
	if(n % 2) {
		*(C.end() - 1) = "^";
		C.push_back(">");
		n--;
	}
	for(int i = 0; i < n / 2; i++) {
		C.push_back("<");
		C.push_back(">");
	}
	for(int i = 0; i < C.size(); i++) cout << C[i] << endl;
	return 0;
}