import java.util.Scanner;


public class Main {
	public static void main(String[] args){
		Scanner sc = new Scanner(System.in);
		int T = sc.nextInt();
		int A = sc.nextInt();
		int B = sc.nextInt();
		if(A<B){
			int tmp = A;
			A=B;
			B=tmp;
		}
		int need = A;
		if(T < need  || T+1==need){
			System.out.println("NO");
			return;
		}

		System.out.println("YES");
		for(int i=0;i<B;i++){
			System.out.println("^>");
		}
		int rest = T - B;
		if(rest==0) return;
		while(true){
			if(rest == 2){
				System.out.println(">");
				System.out.println("<");
				return;
			}
			if(rest == 3){
				System.out.println("^>");
				System.out.println("<");
				System.out.println("v");
				return;
			}
			System.out.println(">");
			System.out.println("<");
			rest-=2;
		}

	}
}