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

int main(){
	ll t,a,b;
	cin >> t >> a >> b;
	if((t < a or t < b) or (a == 0 and b == 0 and t == 1) ){
		cout << "NO" << endl;
		return 0;
	}
	cout << "YES" << endl;
	vector<string> data(t);
	for(int i = 0; i < a; i++) data[i] += "^";
	for(int i = 0; i < b; i++) data[t-1-i] += ">";
	for(int i = 0; i < (t - a) / 2; i++){
		data[a+2*i] += "^";
		data[a+2*i+1] += "v";
	}
	for(int i = 0; i < (t - b) / 2; i++){
		data[t-1-(b+2*i)] += ">";
		data[t-1-(b+2*i+1)] += "<";
	}
	for(auto a:data) cout << a << endl;			
	return 0;
}