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: Runtime Error)

using System.Linq;
using System;
class Program
{
    static void Main(string[] args)
    {
        var input = System.Console.ReadLine().Trim().Split(' ');
        var n = long.Parse(input[0]);
        var k = long.Parse(input[1]);
        long result = -1 ;
        var abList = new int[n].Select(w => System.Console.ReadLine().Trim().Split(' ').Select(long.Parse).ToArray()).OrderBy(w=> w[0]).ToList();
        for(var i = 0; i < n; i++)
        {
            k -= abList[i][1];
            if (k <= 0)
            {
                result = abList[i][0];
                break;
            }   
        }
        System.Console.WriteLine(result);
        //System.Console.Read();
    }
}