PRATA - Roti Prata

IEEE is having its AGM next week and the president wants to serve cheese prata after the meeting. The subcommittee members are asked to go to food connection and get P (P<=1000) pratas packed for the function. The stall has L cooks (L<=50) and each cook has a rank R (1<=R<=8). A cook with a rank R can cook 1 prata in the first R minutes 1 more prata in the next 2R minutes, 1 more prata in 3R minutes and so on (he can only cook a complete prata) (For example if a cook is ranked 2, he will cook one prata in 2 minutes one more prata in the next 4 mins an one more in the next 6 minutes hence in total 12 minutes he cooks 3 pratas in 13 minutes also he can cook only 3 pratas as he does not have enough time for the 4th prata). The webmaster wants to know the minimum time to get the order done. Please write a program to help him out.

Input

The first line tells the number of test cases. Each test case consist of 2 lines. In the first line of the test case we have P the number of prata ordered. In the next line the first integer denotes the number of cooks L and L integers follow in the same line each denoting the rank of a cook.

Output

Print an integer which tells the number of minutes needed to get the order done.

Example

Input:
3
10
4 1 2 3 4
8
1 1
8
8 1 1 1 1 1 1 1 1
Output:
12
36
1

Added by:Saransh Bansal
Date:2011-05-14
Time limit:1s
Source limit:50000B
Memory limit:1536MB
Cluster: Cube (Intel G860)
Languages:All except: ASM64
Resource:Own problem- NTU IEEE codejam 2011

hide comments
2021-01-15 09:14:50
use binary search on time space
2021-01-15 08:34:02
Solved using Binary Search.
AC in one go :)
2021-01-14 07:38:15
AC in one go :P
2020-12-28 23:02:51
AC in first go
2020-12-14 04:09:01
anyone has solution with time complexity < O(P*L)
2020-10-25 17:24:36
"A cook with a rank R can cook 1 prata in the first R minutes 1 more prata in the next 2R minutes"
I did not read the "next" in the problem statement :D

So, a cook does not take constant amount of time for each prata it seems!
2020-10-25 14:13:16
In the example test case,
For the 2nd one:
8
1 1

How is the answer 36?

We have a cook who can make 1 prata in 1 minutes
Thus, he would make 8 pratas in 8 minutes.

Shouldn't the answer be 8 ?
2020-10-17 08:28:17
ac in one go
2020-09-29 15:56:37
Your code has to be in c++ with fastio, else it wont pass anything.

[NG]: It's possible in Python: https://www.spoj.com/ranks/PRATA/lang=PYTH%202.7

Last edit: 2020-09-29 22:12:28
2020-09-29 15:35:40
TLE with Python using BS.
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