import java.util.Scanner;
class Main{

	public static void main(String[] args){
Scanner sc = new Scanner(System.in);

int a;
int b;
int c;
int hantei = 0;

a = sc.nextInt();
b = sc.nextInt();
c = sc.nextInt();

if(a<b){
	hantei++;
}else{
	hantei = 0;
}

if(a<c){
	hantei++;
}else{
	hantei = 0;
}

if(b<c){
	hantei++;
}else{
	hantei = 0;
}
if(hantei==3){
	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