import java.util.Scanner;

public class Main {
	public static void main(String[] args) throws Exception {
		Scanner sc = new Scanner(System.in);
		int s = sc.nextInt();
		int t = sc.nextInt();
		char c = sc.next().charAt(0);
		sc.close();

		if (s < t && c == '<') {
			System.out.println("Yes");
		} else if (s > t && c == '>') {
			System.out.println("Yes");
		} else if (s == t && c == '=') {
			System.out.println("Yes");
		} else {
			System.out.println("No");
		}
	}
}