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 AtCoder.Tenka1._2019Beginner
{
    class A
    {
        static void Solve()
        {
            int[] inputs = Console.ReadLine().Split(' ').Select(x => int.Parse(x)).ToArray();
            string output = "No";

            if (inputs[0] <= inputs[2] && inputs[2] <= inputs[1])
                output = "Yes";
            else if (inputs[1] <= inputs[2] && inputs[2] <= inputs[0])
                output = "Yes";

            Console.WriteLine(output);
        }

        static void Main(string[] args)
        {
            Solve();
        }
    }
}