import java.util.Scanner;

class Main {
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		
		int a = 0;
		int b = 0;
		int c = 0;
		
		a = sc.nextInt();
		b = sc.nextInt();
		c = sc.nextInt();

		if ( a < b && b < c && a < 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 = 0;
		int b = 0;
		int c = 0;
		
		a = sc.nextInt();
		b = sc.nextInt();
		c = sc.nextInt();

		if ( a < b && b < c && a < 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 = 0;
		int b = 0;
		int c = 0;
		
		a = sc.nextInt();
		b = sc.nextInt();
		c = sc.nextInt();

		if ( a < b && b < c && a < c ) {
			System.out.println("Yes");
		} else {
			System.out.println("No");
		}
	} main {
		Scanner sc = new Scanner(System.in);
		
		int a = 0;
		int b = 0;
		int c = 0;
		
		a = sc.nextInt();
		b = sc.nextInt();
		c = sc.nextInt();

		if ( a < b && b < c && a < c ) {
			System.out.println("Yes");
		} else {
			System.out.println("No");
		}
	} Scanner sc = new Scanner(System.in); sc new Scanner(System.in) int a = 0; a 0 int b = 0; b 0 int c = 0; c 0 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 if ( a < b && b < c && a < c ) {
			System.out.println("Yes");
		} else {
			System.out.println("No");
		} a < b && b < c && a < c a < b && b < c && a < c a < b a b b < c b c a < c a 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 = 0;
		int b = 0;
		int c = 0;
		
		a = sc.nextInt();
		b = sc.nextInt();
		c = sc.nextInt();

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