#include <iostream>
using namespace std;

string solve(int T, int A, char up, char down){
	string res = "";
	while(A > 0){
		res += up;
		--A;
		--T;
	}
	while(T > 0){
		res += up;
		res += down;
		T -= 2;
	}
	return res;
}

int main(){
	int T, A, B;
	cin >> T >> A >> B;

	if(T == 1 && A == 0 && B == 0){
		cout << "NO" << endl;
		return 0;
	}
	if(A > T || B > T){
		cout << "NO" << endl;
		return 0;
	}

	cout << "YES" << endl;

	string ud;
	if((T - A) % 2 == 0){
		ud = solve(T, A, '^', 'v');
	} else {
		ud = " " + solve(T - 1, A, '^', 'v');
	}

	string lr;
	if((T - B) % 2 == 0){
		lr = solve(T, B, '>', '<');
	} else {
		lr = solve(T - 1, B, '>', '<') + " ";
	}

	for(int i=0;i<T;i++){
		if(ud[i] != ' ')cout << ud[i];
		if(lr[i] != ' ')cout << lr[i];
		cout << endl;
	}

	return 0;
}