import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.Scanner;


public class Main {

	public static void main(String[] args) throws IOException {
		BufferedReader br=new BufferedReader(new InputStreamReader(System.in));
		Scanner scan=new Scanner(new BufferedReader(new InputStreamReader(System.in)));
		int x=scan.nextInt();
		int y=scan.nextInt();
		int z=scan.nextInt();
		if(x<y && y<z)
			System.out.println("Yes");
		else
			System.out.println("No");
	}

} import java.io.BufferedReader; BufferedReader java.io import java.io.IOException; IOException java.io import java.io.InputStreamReader; InputStreamReader java.io import java.util.Scanner; Scanner java.util public class Main {

	public static void main(String[] args) throws IOException {
		BufferedReader br=new BufferedReader(new InputStreamReader(System.in));
		Scanner scan=new Scanner(new BufferedReader(new InputStreamReader(System.in)));
		int x=scan.nextInt();
		int y=scan.nextInt();
		int z=scan.nextInt();
		if(x<y && y<z)
			System.out.println("Yes");
		else
			System.out.println("No");
	}

} Main public static void main(String[] args) throws IOException {
		BufferedReader br=new BufferedReader(new InputStreamReader(System.in));
		Scanner scan=new Scanner(new BufferedReader(new InputStreamReader(System.in)));
		int x=scan.nextInt();
		int y=scan.nextInt();
		int z=scan.nextInt();
		if(x<y && y<z)
			System.out.println("Yes");
		else
			System.out.println("No");
	} main {
		BufferedReader br=new BufferedReader(new InputStreamReader(System.in));
		Scanner scan=new Scanner(new BufferedReader(new InputStreamReader(System.in)));
		int x=scan.nextInt();
		int y=scan.nextInt();
		int z=scan.nextInt();
		if(x<y && y<z)
			System.out.println("Yes");
		else
			System.out.println("No");
	} BufferedReader br=new BufferedReader(new InputStreamReader(System.in)); br new BufferedReader(new InputStreamReader(System.in)) Scanner scan=new Scanner(new BufferedReader(new InputStreamReader(System.in))); scan new Scanner(new BufferedReader(new InputStreamReader(System.in))) int x=scan.nextInt(); x scan.nextInt() scan.nextInt scan int y=scan.nextInt(); y scan.nextInt() scan.nextInt scan int z=scan.nextInt(); z scan.nextInt() scan.nextInt scan if(x<y && y<z)
			System.out.println("Yes");
		else
			System.out.println("No"); x<y && y<z x<y x y y<z y z System.out.println("Yes") System.out.println System.out System System.out "Yes" System.out.println("No") System.out.println System.out System System.out "No" String[] args args public class Main {

	public static void main(String[] args) throws IOException {
		BufferedReader br=new BufferedReader(new InputStreamReader(System.in));
		Scanner scan=new Scanner(new BufferedReader(new InputStreamReader(System.in)));
		int x=scan.nextInt();
		int y=scan.nextInt();
		int z=scan.nextInt();
		if(x<y && y<z)
			System.out.println("Yes");
		else
			System.out.println("No");
	}

} public class Main {

	public static void main(String[] args) throws IOException {
		BufferedReader br=new BufferedReader(new InputStreamReader(System.in));
		Scanner scan=new Scanner(new BufferedReader(new InputStreamReader(System.in)));
		int x=scan.nextInt();
		int y=scan.nextInt();
		int z=scan.nextInt();
		if(x<y && y<z)
			System.out.println("Yes");
		else
			System.out.println("No");
	}

} Main
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.Scanner;


public class Main {

	public static void main(String[] args) throws IOException {
		BufferedReader br=new BufferedReader(new InputStreamReader(System.in));
		Scanner scan=new Scanner(new BufferedReader(new InputStreamReader(System.in)));
		int x=scan.nextInt();
		int y=scan.nextInt();
		int z=scan.nextInt();
		if(x<y && y<z)
			System.out.println("Yes");
		else
			System.out.println("No");
	}

}