import java.util.Scanner;

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

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

