import java.util.*;

public class Main {
	public static void main(String[] args) {
		@SuppressWarnings("resource")
		Scanner sc = new Scanner(System.in);
		int a = sc.nextInt();
		int b = sc.nextInt();
		int c = sc.nextInt();
		if (a < b && b < c)
			System.out.println("Yes");
		else
			System.out.println("No");
	}
} import java.util.*; util.* java public class Main {
	public static void main(String[] args) {
		@SuppressWarnings("resource")
		Scanner sc = new Scanner(System.in);
		int a = sc.nextInt();
		int b = sc.nextInt();
		int c = sc.nextInt();
		if (a < b && b < c)
			System.out.println("Yes");
		else
			System.out.println("No");
	}
} Main public static void main(String[] args) {
		@SuppressWarnings("resource")
		Scanner sc = new Scanner(System.in);
		int a = sc.nextInt();
		int b = sc.nextInt();
		int c = sc.nextInt();
		if (a < b && b < c)
			System.out.println("Yes");
		else
			System.out.println("No");
	} main {
		@SuppressWarnings("resource")
		Scanner sc = new Scanner(System.in);
		int a = sc.nextInt();
		int b = sc.nextInt();
		int c = sc.nextInt();
		if (a < b && b < c)
			System.out.println("Yes");
		else
			System.out.println("No");
	} @SuppressWarnings("resource")
		Scanner sc = new Scanner(System.in); sc new Scanner(System.in) int a = sc.nextInt(); a sc.nextInt() sc.nextInt sc int b = sc.nextInt(); b sc.nextInt() sc.nextInt sc int c = sc.nextInt(); c sc.nextInt() sc.nextInt sc if (a < b && b < c)
			System.out.println("Yes");
		else
			System.out.println("No"); a < b && b < c a < b a b b < c b c System.out.println("Yes") System.out.println System.out System System.out "Yes" System.out.println("No") System.out.println System.out System System.out "No" String[] args args public class Main {
	public static void main(String[] args) {
		@SuppressWarnings("resource")
		Scanner sc = new Scanner(System.in);
		int a = sc.nextInt();
		int b = sc.nextInt();
		int c = sc.nextInt();
		if (a < b && b < c)
			System.out.println("Yes");
		else
			System.out.println("No");
	}
} public class Main {
	public static void main(String[] args) {
		@SuppressWarnings("resource")
		Scanner sc = new Scanner(System.in);
		int a = sc.nextInt();
		int b = sc.nextInt();
		int c = sc.nextInt();
		if (a < b && b < c)
			System.out.println("Yes");
		else
			System.out.println("No");
	}
} Main
import java.util.*;

public class Main {
	public static void main(String[] args) {
		@SuppressWarnings("resource")
		Scanner sc = new Scanner(System.in);
		int a = sc.nextInt();
		int b = sc.nextInt();
		int c = sc.nextInt();
		if (a < b && b < c)
			System.out.println("Yes");
		else
			System.out.println("No");
	}
}