import java.util.*;
public class Main {
    public static void main(String[] args){
    	Scanner sc = new Scanner(System.in);
    	int[] ary = new int[3];
    	ary[0]=sc.nextInt();
    	ary[1]=sc.nextInt();
    	ary[2]=sc.nextInt();

    	if(ary[0]<ary[1]&&ary[1]<ary[2]){
    		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