import java.util.Scanner;

class Main {
	public static void main(String[] args) {
    	Scanner sc = new Scanner(System.in);
    	int a = (int)Integer.parseInt(sc.next());
    	int b = (int)Integer.parseInt(sc.next());
    	int c = (int)Integer.parseInt(sc.next());
    	if(a<b && b<c){
    		System.out.println("Yes");
    	}else {
    		System.out.println("No");
		}
    }
}


/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