import java.util.*;
class Main {
	public static void main (String[] args) throws java.lang.Exception {
		Scanner sc = new Scanner(System.in);
		int a = sc.nextInt(), b = sc.nextInt(), c = sc.nextInt();
		System.out.println(a < b && b < c ? "Yes" : "No");
	}
} import java.util.*; util.* java class Main {
	public static void main (String[] args) throws java.lang.Exception {
		Scanner sc = new Scanner(System.in);
		int a = sc.nextInt(), b = sc.nextInt(), c = sc.nextInt();
		System.out.println(a < b && b < c ? "Yes" : "No");
	}
} Main public static void main (String[] args) throws java.lang.Exception {
		Scanner sc = new Scanner(System.in);
		int a = sc.nextInt(), b = sc.nextInt(), c = sc.nextInt();
		System.out.println(a < b && b < c ? "Yes" : "No");
	} main {
		Scanner sc = new Scanner(System.in);
		int a = sc.nextInt(), b = sc.nextInt(), c = sc.nextInt();
		System.out.println(a < b && b < c ? "Yes" : "No");
	} Scanner sc = new Scanner(System.in); sc new Scanner(System.in) int a = sc.nextInt() a sc.nextInt() sc.nextInt sc b = sc.nextInt() b sc.nextInt() sc.nextInt sc c = sc.nextInt(); c sc.nextInt() sc.nextInt sc System.out.println(a < b && b < c ? "Yes" : "No") System.out.println System.out System System.out a < b && b < c ? "Yes" : "No" a < b && b < c a < b a b b < c b c "Yes" "No" String[] args args
import java.util.*;
class Main {
	public static void main (String[] args) throws java.lang.Exception {
		Scanner sc = new Scanner(System.in);
		int a = sc.nextInt(), b = sc.nextInt(), c = sc.nextInt();
		System.out.println(a < b && b < c ? "Yes" : "No");
	}
}