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


class Main {
	public static void main(String[] args) throws IOException{

		BufferedReader br =
				new BufferedReader(new InputStreamReader(System.in));

		String str = br.readLine();

		StringTokenizer st =
	    		new StringTokenizer(str, " ");

		String str1 = st.nextToken();
		String str2 = st.nextToken();
		String str3 = st.nextToken();

		int num1 = Integer.parseInt(str1);
		int num2 = Integer.parseInt(str2);
		int num3 = Integer.parseInt(str3);

		if(num1<num2) {
			if(num2<num3) {
				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