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;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace Tenka1_2019
{
    class Program
    {
        static void Main(string[] args)
        {
            int[] abc = Console.ReadLine().Split().Select(int.Parse).ToArray();
            string ans = "Yes";
            if ((abc[0] < abc[1] && (abc[1] < abc[2] || abc[0] > abc[2])) || (abc[0] > abc[1] && (abc[1] > abc[2] || abc[2]>abc[0]))) { ans = "No"; }
            Console.WriteLine(ans);
        }
    }
}