Problem:
Score : 100 points

Problem Statement

You are given three integers A, B and C.
Determine whether C is not less than A and not greater than B.

Constraints

-100≤A,B,C≤100

A, B and C are all integers.

Input

Input is given from Standard Input in the following format:

A B C

Output

If the condition is satisfied, print Yes; otherwise, print No.

Sample Input 1

1 3 2

Sample Output 1

Yes

C=2 is not less than A=1 and not greater than B=3, and thus the output should be Yes.

Sample Input 2

6 5 4

Sample Output 2

No

C=4 is less than A=6, and thus the output should be No.

Sample Input 3

2 2 2

Sample Output 3

Yes

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

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

namespace ABCtest
{
    delegate void Signal();
    class Program
    {
        static void Main(string[] args)
        {
            int A, B, C;
            bool Judg = false;
            string Ans = "No";

            string a = Console.ReadLine();
            string b = Console.ReadLine();
            string c = Console.ReadLine();

            if (!int.TryParse(a, out A) | !int.TryParse(b, out B) | !int.TryParse(c, out C)) return;
                 
                if (C >= A & C <= B)
                {
                    Judg = true;
                    Ans = "Yes";
                }
                Console.WriteLine(Ans);
                Console.ReadLine();
            

        }
    }
}