import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;

public class Main {
	public static void main(String[] args)throws IOException{
		BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
		String str = br.readLine();
		String[] s = str.split(" ");

		int a = Integer.parseInt(s[0]);
		int b = Integer.parseInt(s[1]);
		int c = Integer.parseInt(s[2]);

		if((0 <= a)&&(0 <= b)&&(0 <= c)){
			if((100 >= a)&&(100 >= b)&&(100 >= c)){
				if(a < b){
					if(b < c){
						System.out.println("Yes");
					}else{
						System.out.println("No");
					}
				}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