AE1B  Tables
Byteman works as a carpenter. He has just received an order for s pinewood tables. Although he has plenty of pinewood boards in his workshop, he has just run out of screws. Therefore he needs to walk to the warehouse and bring back some boxes with screws. What is the minimum number of boxes that he needs to bring in order to have enough screws to make the tables?
Input
The first line of the standard input contains three integers n, k, and s (1 ≤ n, k, s ≤ 1000) separated with single spaces. They denote the number of boxes with screws in Byteman's warehouse, the number of screws needed to make a table and the number of tables to be made by Byteman, respectively. The second line contains n (not necessarily different) integers a_{i} (1 ≤ a_{i} ≤ 1000) separated with single spaces, such that a_{i} is the number of screws in the i^{th} box in the warehouse.
Output
The first and only line of the standard output should contain a single integer  the minimal number of boxes with screws that Byteman needs to bring from his warehouse in order to make s tables. You may assume that Byteman has enough screws in the warehouse to make all tables.
Example
For the input data:
5 6 3 3 9 5 7 3
the correct result is:
3
Explanation of the example. To make three tables, each of which requires six screws, Byteman has to bring three boxes with screws from the warehouse. These can be either the ones containing 3, 7 and 9 screws, or the ones with 9, 5 and 7 screws.
Task author: Jakub Lacki.
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vaibhavgupta15:
20161022 08:28:32
remember not to use ascending sort!


shubhama003:
20161013 16:37:47
really easy problem.


adarshkr532:
20161012 06:21:11
very easy ques......... got ac in first attempt 

ayon26:
20160923 18:35:23
who ever in this comment section said that they've done this program and it's very "easy"...none of them has done it... #liars


giriprasad kemburu:
20160804 07:11:48
Easy problem use of sorting.


Nallagatla Manikanta:
20151022 20:56:24
love python just 7 lines in python :) 

Abhishek Naik:
20150426 14:08:49
But what if the total number of screws that he has is less than the total number of those that he requires? Eg:


Sahil Kharb:
20141118 10:41:44
ad hoc :P


excursionist:
20140624 22:44:41
GOT AC :D


Norman Fernandez:
20140313 06:54:22
Special case: when the minimum of boxes is one, this is critical for the las judge... 
Added by:  Race with time 
Date:  20090503 
Time limit:  0.400s 
Source limit:  50000B 
Memory limit:  1536MB 
Cluster:  Cube (Intel G860) 
Languages:  All except: ERL JS NODEJS PERL 6 VB.net 
Resource:  Algorithmic Engagements 2009 