import java.util.Scanner;
public class Main
{
	public static void main(String[] args){
		//3????????´??°???????????????
		Scanner scan = new Scanner(System.in);
		int a;
		int b;
		int c;
		a = scan.nextInt();
		b = scan.nextInt();
		c = scan.nextInt();
		yesNo(a, b, c);
	}

	//a<b<c??§Yes???????????????????????????
	public static void yesNo(int a,int b, int c){
		String ans = "No";
		if(a < b){
			ans = "No";
			if(a < c){
				ans = "No";
				if(b < c){
					ans = "Yes";
				}
			}
		}
		System.out.println(ans);
	}
}
/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