import java.util.Scanner;

class Main{
    static boolean hikaku(int a,int b){
	if(a < b)
	    return (true);
	else
	    return(false);
    }

    public static void main(String[] args){
	Scanner stdIn = new Scanner(System.in);
	int x = stdIn.nextInt();
	int y = stdIn.nextInt();
	int z = stdIn.nextInt();
	if(hikaku(x,y) && hikaku(y,z))
	    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