#include<iostream>
#include<algorithm>

int main() {
	int time, up, right;
	std::cin >> time >> up >> right;

	if (time < std::max(up, right)) {
		std::cout << "NO" << std::endl;
		return 0;
	}
	std::cout << "YES" << std::endl;

	while (up != 1 && right != 1) {
		std::cout << "^>" << std::endl;
		up--;
		right--;
		time--;
	}

	while (up != 1) {
		std::cout << "^" << std::endl;
		up--;
		time--;
	}
	while (right != 1) {
		std::cout << ">" << std::endl;
		right--;
		time--;
	}

	//この時点で目標地点の左下にいる

	while(time > 2){
		std::cout << "<" << std::endl;
		std::cout << ">" << std::endl;
		time -= 2;
	}

	if(time == 2){
		std::cout << ">" << std::endl;
		std::cout << "^" << std::endl;
	} else {
		std::cout << "^>" << std::endl;
	}
	return 0;
}