import java.util.Scanner;

class Main {
	Scanner sc=new Scanner(System.in);

	public void run() {
		int a=sc.nextInt(),b=sc.nextInt(),c=sc.nextInt();
		ln((a<b && b<c)?"Yes":"No");
	}

	public static void main(String[] args) {
		new Main().run();
	}
	
	public static void pr(Object o) {
		System.out.print(o);
	}
	
	public static void ln(Object o) {
		System.out.println(o);
	}
	
	public static void ln() {
		System.out.println();
	}
}
/tmp/hf-datasets-cache/medium/datasets/42704881117311-config-parquet-and-info-qiankunmu-Project_CodeNet-896c9d36/hub/datasets--qiankunmu--Project_CodeNet_Python800_and_Java250/snapshots/c899fde44a77ba1cc14973ed3de064e4ff3aadc7/Project_CodeNet_Java250.tar.gz