public class Main{
  public void run(java.io.InputStream in, java.io.PrintStream out){
    java.util.Scanner sc = new java.util.Scanner(in);
/*answer*/
    int a, b, c;
    a = sc.nextInt();
    b = sc.nextInt();
    c = sc.nextInt();

    if(a < b && b < c){
      System.out.println("Yes");
    }else{
      System.out.println("No");
    }
/*fin*/
    sc.close();
  }
  public static void main(String[] args){
    (new Main()).run(System.in, System.out);
  }
} public class Main{
  public void run(java.io.InputStream in, java.io.PrintStream out){
    java.util.Scanner sc = new java.util.Scanner(in);
/*answer*/
    int a, b, c;
    a = sc.nextInt();
    b = sc.nextInt();
    c = sc.nextInt();

    if(a < b && b < c){
      System.out.println("Yes");
    }else{
      System.out.println("No");
    }
/*fin*/
    sc.close();
  }
  public static void main(String[] args){
    (new Main()).run(System.in, System.out);
  }
} Main public void run(java.io.InputStream in, java.io.PrintStream out){
    java.util.Scanner sc = new java.util.Scanner(in);
/*answer*/
    int a, b, c;
    a = sc.nextInt();
    b = sc.nextInt();
    c = sc.nextInt();

    if(a < b && b < c){
      System.out.println("Yes");
    }else{
      System.out.println("No");
    }
/*fin*/
    sc.close();
  } run {
    java.util.Scanner sc = new java.util.Scanner(in);
/*answer*/
    int a, b, c;
    a = sc.nextInt();
    b = sc.nextInt();
    c = sc.nextInt();

    if(a < b && b < c){
      System.out.println("Yes");
    }else{
      System.out.println("No");
    }
/*fin*/
    sc.close();
  } java.util.Scanner sc = new java.util.Scanner(in); sc new java.util.Scanner(in) int a a b b c; c a = sc.nextInt() a sc.nextInt() sc.nextInt sc b = sc.nextInt() b sc.nextInt() sc.nextInt sc c = sc.nextInt() c sc.nextInt() sc.nextInt sc if(a < b && b < c){
      System.out.println("Yes");
    }else{
      System.out.println("No");
    } a < b && b < c a < b a b b < c b c {
      System.out.println("Yes");
    } System.out.println("Yes") System.out.println System.out System System.out "Yes" {
      System.out.println("No");
    } System.out.println("No") System.out.println System.out System System.out "No" sc.close() sc.close sc java.io.InputStream in in java.io.PrintStream out out public static void main(String[] args){
    (new Main()).run(System.in, System.out);
  } main {
    (new Main()).run(System.in, System.out);
  } (new Main()).run(System.in, System.out) (new Main()).run (new Main()) System.in System System.in System.out System System.out String[] args args public class Main{
  public void run(java.io.InputStream in, java.io.PrintStream out){
    java.util.Scanner sc = new java.util.Scanner(in);
/*answer*/
    int a, b, c;
    a = sc.nextInt();
    b = sc.nextInt();
    c = sc.nextInt();

    if(a < b && b < c){
      System.out.println("Yes");
    }else{
      System.out.println("No");
    }
/*fin*/
    sc.close();
  }
  public static void main(String[] args){
    (new Main()).run(System.in, System.out);
  }
} public class Main{
  public void run(java.io.InputStream in, java.io.PrintStream out){
    java.util.Scanner sc = new java.util.Scanner(in);
/*answer*/
    int a, b, c;
    a = sc.nextInt();
    b = sc.nextInt();
    c = sc.nextInt();

    if(a < b && b < c){
      System.out.println("Yes");
    }else{
      System.out.println("No");
    }
/*fin*/
    sc.close();
  }
  public static void main(String[] args){
    (new Main()).run(System.in, System.out);
  }
} Main
public class Main{
  public void run(java.io.InputStream in, java.io.PrintStream out){
    java.util.Scanner sc = new java.util.Scanner(in);
/*answer*/
    int a, b, c;
    a = sc.nextInt();
    b = sc.nextInt();
    c = sc.nextInt();

    if(a < b && b < c){
      System.out.println("Yes");
    }else{
      System.out.println("No");
    }
/*fin*/
    sc.close();
  }
  public static void main(String[] args){
    (new Main()).run(System.in, System.out);
  }
}