import java.util.Scanner;

public class Main{


	public static void main(String[] args){

		//?¨??????\???
		Scanner scan=new Scanner(System.in);
		int a=scan.nextInt();
		int b=scan.nextInt();
		int c=scan.nextInt();
		result(a,b,c);

	}

	//???????????¨?????????????????????
	private static void result(int a, int b, int c){
		if(a<b&&b<c){
			System.out.println("Yes");}
		else{System.out.println("No");}
	}


} import java.util.Scanner; Scanner java.util public class Main{


	public static void main(String[] args){

		//?¨??????\???
		Scanner scan=new Scanner(System.in);
		int a=scan.nextInt();
		int b=scan.nextInt();
		int c=scan.nextInt();
		result(a,b,c);

	}

	//???????????¨?????????????????????
	private static void result(int a, int b, int c){
		if(a<b&&b<c){
			System.out.println("Yes");}
		else{System.out.println("No");}
	}


} Main public static void main(String[] args){

		//?¨??????\???
		Scanner scan=new Scanner(System.in);
		int a=scan.nextInt();
		int b=scan.nextInt();
		int c=scan.nextInt();
		result(a,b,c);

	} main {

		//?¨??????\???
		Scanner scan=new Scanner(System.in);
		int a=scan.nextInt();
		int b=scan.nextInt();
		int c=scan.nextInt();
		result(a,b,c);

	} Scanner scan=new Scanner(System.in); scan new Scanner(System.in) int a=scan.nextInt(); a scan.nextInt() scan.nextInt scan int b=scan.nextInt(); b scan.nextInt() scan.nextInt scan int c=scan.nextInt(); c scan.nextInt() scan.nextInt scan result(a,b,c) result a b c String[] args args //???????????¨?????????????????????
	private static void result(int a, int b, int c){
		if(a<b&&b<c){
			System.out.println("Yes");}
		else{System.out.println("No");}
	} result {
		if(a<b&&b<c){
			System.out.println("Yes");}
		else{System.out.println("No");}
	} 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("Yes") System.out.println System.out System System.out "Yes" {System.out.println("No");} System.out.println("No") System.out.println System.out System System.out "No" int a a int b b int c c public class Main{


	public static void main(String[] args){

		//?¨??????\???
		Scanner scan=new Scanner(System.in);
		int a=scan.nextInt();
		int b=scan.nextInt();
		int c=scan.nextInt();
		result(a,b,c);

	}

	//???????????¨?????????????????????
	private static void result(int a, int b, int c){
		if(a<b&&b<c){
			System.out.println("Yes");}
		else{System.out.println("No");}
	}


} public class Main{


	public static void main(String[] args){

		//?¨??????\???
		Scanner scan=new Scanner(System.in);
		int a=scan.nextInt();
		int b=scan.nextInt();
		int c=scan.nextInt();
		result(a,b,c);

	}

	//???????????¨?????????????????????
	private static void result(int a, int b, int c){
		if(a<b&&b<c){
			System.out.println("Yes");}
		else{System.out.println("No");}
	}


} Main
import java.util.Scanner;

public class Main{


	public static void main(String[] args){

		//?¨??????\???
		Scanner scan=new Scanner(System.in);
		int a=scan.nextInt();
		int b=scan.nextInt();
		int c=scan.nextInt();
		result(a,b,c);

	}

	//???????????¨?????????????????????
	private static void result(int a, int b, int c){
		if(a<b&&b<c){
			System.out.println("Yes");}
		else{System.out.println("No");}
	}


}