import java.io.*;
class Main{
  public static void main(String[] args) throws IOException {
    BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
    String line = br.readLine();
    String[] array = line.split(" ");
    if (!(array.length == 3))
      return;
    int a = Integer.parseInt(array[0]);
    int b = Integer.parseInt(array[1]);
    int c = Integer.parseInt(array[2]);
    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