import java.util.Scanner;
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 if(b > c){
				System.out.println("No");
			}
		}
		else
			System.out.println("No");
		sc.close();
		}
	} import java.util.Scanner; Scanner 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 if(b > c){
				System.out.println("No");
			}
		}
		else
			System.out.println("No");
		sc.close();
		}
	} 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 if(b > c){
				System.out.println("No");
			}
		}
		else
			System.out.println("No");
		sc.close();
		} 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 if(b > c){
				System.out.println("No");
			}
		}
		else
			System.out.println("No");
		sc.close();
		} 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 if(b > c){
				System.out.println("No");
			}
		}
		else
			System.out.println("No"); a < b a b {
			if(b < c){
				System.out.println("Yes");
			}
			else if(b > c){
				System.out.println("No");
			}
		} if(b < c){
				System.out.println("Yes");
			}
			else if(b > c){
				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" if(b > c){
				System.out.println("No");
			} b > c b c {
				System.out.println("No");
			} System.out.println("No") System.out.println System.out System System.out "No" System.out.println("No") System.out.println System.out System System.out "No" sc.close() sc.close sc 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 if(b > c){
				System.out.println("No");
			}
		}
		else
			System.out.println("No");
		sc.close();
		}
	} 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 if(b > c){
				System.out.println("No");
			}
		}
		else
			System.out.println("No");
		sc.close();
		}
	} Main
import java.util.Scanner;
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 if(b > c){
				System.out.println("No");
			}
		}
		else
			System.out.println("No");
		sc.close();
		}
	}
