#include <bits/stdc++.h>

#define REP(i, x, n) for(int i = x; i < (int)(n); i++)
#define rep(i, n) REP(i, 0, n)
#define all(x) (x).begin(), (x).end()
#define rall(x) (x).rbegin(), (x).rend()
#define F first
#define S second
#define mp make_pair

using namespace std;

typedef long long ll;
typedef unsigned long long ull;
typedef pair<int, int> P;

int main() {
	int t, a, b;
	cin >> t >> a >> b;
	if(min(a, b) + abs(a - b) > t) {
		cout << "NO" << endl;
	}
	else {
		int v = t - min(a, b) - abs(a - b);
		if(v % 2 && min(a, b) == 0) {
			cout << "NO" << endl;
		}
		else {
			cout << "YES" << endl;
			rep(i, min(a, b) - 1) {
				cout << "^>" << endl;
			}
			if(v % 2) {
				cout << "^" << endl;
				cout << ">" << endl;
				v--;
			}
			else {
				cout << "^>" << endl;
			}
			rep(i, abs(a - b)) {
				if(a > b) cout << "^" << endl;
				else cout << ">" << endl;
			}
			rep(i, v) {
				if(i % 2) cout << "<" << endl;
				else cout << ">" << endl;
			}
		}
	}
	
  return 0;
}