import java.util.Scanner;

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<0 || 100<a) || (b<0 || 100<b) ||(c<0 || 100<c)){
            System.exit(-1);
        }else 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 = sc.nextInt();
        int b = sc.nextInt();
        int c = sc.nextInt();
        if((a<0 || 100<a) || (b<0 || 100<b) ||(c<0 || 100<c)){
            System.exit(-1);
        }else 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();
        int b = sc.nextInt();
        int c = sc.nextInt();
        if((a<0 || 100<a) || (b<0 || 100<b) ||(c<0 || 100<c)){
            System.exit(-1);
        }else 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();
        int b = sc.nextInt();
        int c = sc.nextInt();
        if((a<0 || 100<a) || (b<0 || 100<b) ||(c<0 || 100<c)){
            System.exit(-1);
        }else 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 int b = sc.nextInt(); b sc.nextInt() sc.nextInt sc int c = sc.nextInt(); c sc.nextInt() sc.nextInt sc if((a<0 || 100<a) || (b<0 || 100<b) ||(c<0 || 100<c)){
            System.exit(-1);
        }else if(a<b && b<c){
            System.out.println("Yes");
        }else{
            System.out.println("No");
        } (a<0 || 100<a) || (b<0 || 100<b) ||(c<0 || 100<c) (a<0 || 100<a) || (b<0 || 100<b) ||(c<0 || 100<c) (a<0 || 100<a) a<0 a 0 100<a 100 a (b<0 || 100<b) b<0 b 0 100<b 100 b (c<0 || 100<c) c<0 c 0 100<c 100 c {
            System.exit(-1);
        } System.exit(-1) System.exit System -1 1 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 = sc.nextInt();
        int b = sc.nextInt();
        int c = sc.nextInt();
        if((a<0 || 100<a) || (b<0 || 100<b) ||(c<0 || 100<c)){
            System.exit(-1);
        }else if(a<b && b<c){
            System.out.println("Yes");
        }else{
            System.out.println("No");
        }
    }
    
}