import java.io.*;
import java.util.Scanner;
import java.util.Arrays;

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();
	
		if(a<b){
			if(b<c){
				System.out.println("Yes");
			}else{
				System.out.println("No");
			}
		}else{
			System.out.println("No");
		}
	}
} import java.io.*; io.* java import java.util.Scanner; Scanner java.util import java.util.Arrays; Arrays 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();
	
		if(a<b){
			if(b<c){
				System.out.println("Yes");
			}else{
				System.out.println("No");
			}
		}else{
			System.out.println("No");
		}
	}
} 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();
	
		if(a<b){
			if(b<c){
				System.out.println("Yes");
			}else{
				System.out.println("No");
			}
		}else{
			System.out.println("No");
		}
	} main {
		Scanner sc = new Scanner(System.in);
		int a = sc.nextInt();
		int b = sc.nextInt();
		int c = sc.nextInt();
	
		if(a<b){
			if(b<c){
				System.out.println("Yes");
			}else{
				System.out.println("No");
			}
		}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 int b = sc.nextInt(); b sc.nextInt() sc.nextInt sc int c = sc.nextInt(); c sc.nextInt() sc.nextInt sc if(a<b){
			if(b<c){
				System.out.println("Yes");
			}else{
				System.out.println("No");
			}
		}else{
			System.out.println("No");
		} a<b a b {
			if(b<c){
				System.out.println("Yes");
			}else{
				System.out.println("No");
			}
		} if(b<c){
				System.out.println("Yes");
			}else{
				System.out.println("No");
			} 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" {
			System.out.println("No");
		} 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){
		Scanner sc = new Scanner(System.in);
		int a = sc.nextInt();
		int b = sc.nextInt();
		int c = sc.nextInt();
	
		if(a<b){
			if(b<c){
				System.out.println("Yes");
			}else{
				System.out.println("No");
			}
		}else{
			System.out.println("No");
		}
	}
} 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();
	
		if(a<b){
			if(b<c){
				System.out.println("Yes");
			}else{
				System.out.println("No");
			}
		}else{
			System.out.println("No");
		}
	}
} Main
import java.io.*;
import java.util.Scanner;
import java.util.Arrays;

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();
	
		if(a<b){
			if(b<c){
				System.out.println("Yes");
			}else{
				System.out.println("No");
			}
		}else{
			System.out.println("No");
		}
	}
}