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