#include<stdio.h>
#include<stdlib.h>
#include<iostream>
#include<algorithm>


using namespace std;


int main()
{
	int t;
	int x;
	int y;
	cin >> t >> x >> y;
	if (t < x || t < y)
	{
		cout << "NO";
		return 0;
	}
	if (1)
	{
		cout << "YES" << endl;
		for (int i = 0; i < t - 2; i++)//두단계 전까지 간다
		{
			if (x > 0)
			{
				x--;
				cout << ">";//한칸가줬다

			}
			else//x가 0
			{
				x++;
				cout << "<";
			}
			if (y > 0)
			{
				y--;
				cout << "^";//한칸가줬다

			}
			else//x가 0
			{
				y++;
				cout << "v";
			}
			//일단 전진
			cout << endl;
		}
		//4가지 케이스가 있음. -1 0

		if (x == 1 && y == 1)
		{
			cout << ">" << endl;
			cout << "^" << endl;
			return 0;
		}
		if (x == 0 && y == 1)
		{
			cout << "<" << endl;
			cout << ">^" << endl;
			return 0;
		}
		if (x == 1 && y == 0)
		{
			cout << ">^" << endl;
			cout << "v" << endl;
			return 0;
		}
		if (x == 0 && y == 0)
		{
			cout << "<^" << endl;
			cout << ">v" << endl;
			return 0;
		}
		if (x > 0)
		{
			x--;
			cout << ">";//한칸가줬다

		}
		else//x가 0
		{
			x++;
			cout << "<";
		}
		if (y > 0)
		{
			y--;
			cout << "^";//한칸가줬다

		}
		else//x가 0
		{
			y++;
			cout << "v";
		}//t는 1
		cout << endl;
		if (x > 0)
		{
			x--;
			cout << ">";//한칸가줬다

		}
		else//x가 0
		{
			x++;
			cout << "<";
		}
		if (y > 0)
		{
			y--;
			cout << "^";//한칸가줬다

		}
		else//x가 0
		{
			y++;
			cout << "v";
		}//t는 1
		cout << endl;
	}

}