import java.util.*;

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

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

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

		System.out.println(result);
	} main {
		Scanner sc = new Scanner(System.in);
		int a = sc.nextInt();
		int b = sc.nextInt();
		int c = sc.nextInt();
		String result = "No";
	
		if (a < b && b < c) {
			result = "Yes";
		}

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

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

		System.out.println(result);
	}
} Main
import java.util.*;

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

		System.out.println(result);
	}
}