import java.util.*;

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

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