Problem:
Score : 100 points

Problem Statement

There are three houses on a number line: House 1, 2 and 3, with coordinates A, B and C, respectively.
Print Yes if we pass the coordinate of House 3 on the straight way from House 1 to House 2 without making a detour, and print No otherwise.

Constraints

0\leq A,B,C\leq 100

A, B and C are distinct integers.

Input

Input is given from Standard Input in the following format:

A B C

Output

Print Yes if we pass the coordinate of House 3 on the straight way from House 1 to House 2 without making a detour, and print No otherwise.

Sample Input 1

3 8 5

Sample Output 1

Yes

We pass the coordinate 5 on the straight way from the house at coordinate 3 to the house at coordinate 8.

Sample Input 2

7 3 1

Sample Output 2

No

Sample Input 3

10 2 4

Sample Output 3

Yes

Sample Input 4

31 41 59

Sample Output 4

No

Solution in C# (Mono 4.6.2.0) (judge verdict: Wrong Answer)

using System;

class Tenka_A{
  static void Main(){
    int[] Ar = Array.ConvertAll(Console.ReadLine().Split(' '), int.Parse);
    int H1 = Ar[0], H2 = Ar[1], H3 = Ar[2];
    if (H1 < H2){
      if (H3 < H2) { // H1 H3 H2の順番
        Console.WriteLine("Yes");
        return;
      }
      else {
        Console.WriteLine("No");
        return;
      }
    }
    else {
      if (H2 < H3) { //H3 > H2 > H1でH2 < H3
        Console.WriteLine("No");
        return;
      }
      else { // H3 < H2でH2 < H1
        Console.WriteLine("No");
        return;
      }
    }
  }
}