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;

public class Lesson06
{
    public static void Main()
    {
        string num  = Console.ReadLine();
        
        string[] nums = num.Split(' ');
        
        int A = int.Parse(nums[0]);
        int B = int.Parse(nums[1]);
        int C = int.Parse(nums[2]);
        
        if(A<=C && C<=B){
            Console.WriteLine("YES");
        }else{
            Console.WriteLine("NO");
        }
        
    }
}