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: Accepted)

using System;
class Program {

    static void Main (string[] args) {
        string[] astr = Console.ReadLine ().Split (' ');
        int a = int.Parse (astr[0]);
        int b = int.Parse (astr[1]);
        int c = int.Parse (astr[2]);

        string rtn = string.Empty;
        if (a < c) {
            if (a <= c && b >= c) {
                rtn = "Yes";
            } else {
                rtn = "No";
            }
        } else {
            if (a > c && b < c) {
                rtn = "Yes";
            } else {
                rtn = "No";

            }
        }
            Console.WriteLine (rtn);
        }

    }