public class Main {
	
		
		public static void main(String[] args) {
			java.util.Scanner scan = new java.util.Scanner(System.in);
		int a = scan.nextInt();
		int b = scan.nextInt();
		int c = scan.nextInt();
		if( 0<= a && 0<= b && 0<= c && 100>= a && 100>= b && 100>= c){
		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