MIXTURES - Mixtures

Harry Potter has n mixtures in front of him, arranged in a row. Each mixture has one of 100 different colors (colors have numbers from 0 to 99).

He wants to mix all these mixtures together. At each step, he is going to take two mixtures that stand next to each other and mix them together, and put the resulting mixture in their place.

When mixing two mixtures of colors a and b, the resulting mixture will have the color (a+b) mod 100.

Also, there will be some smoke in the process. The amount of smoke generated when mixing two mixtures of colors a and b is a*b.

Find out what is the minimum amount of smoke that Harry can get when mixing all the mixtures together.

Input

There will be a number of test cases in the input.

The first line of each test case will contain n, the number of mixtures, 1 <= n <= 100.

The second line will contain n integers between 0 and 99 - the initial colors of the mixtures.

Output

For each test case, output the minimum amount of smoke.

Example

Input:
2
18 19
3
40 60 20

Output:
342
2400

In the second test case, there are two possibilities:

  • first mix 40 and 60 (smoke: 2400), getting 0, then mix 0 and 20 (smoke: 0); total amount of smoke is 2400
  • first mix 60 and 20 (smoke: 1200), getting 80, then mix 40 and 80 (smoke: 3200); total amount of smoke is 4400

The first scenario is a much better way to proceed.


Added by:Tomek Czajka
Date:2005-05-03
Time limit:3s
Source limit:50000B
Memory limit:1536MB
Cluster: Cube (Intel G860)
Languages:All except: NODEJS PERL6 VB.NET
Resource:Purdue Programming Contest Training

hide comments
2016-01-20 10:38:45
Spoiler Alert! - "Solution"
do
{
//read about matrix chain multiplication
//follow 4 basic steps of DP of bottom-up or top-down (as per your choice).
}while(!accepted)
2016-01-16 08:13:24
getting tle, why??

2015-12-22 11:16:04
[code removed]
can anyone please help which cases am I missing ,I am getting WA but checked some test cases and got correct answers..

Last edit: 2015-12-22 15:42:19
2015-12-18 13:21:09
can we pick any two consecutive mixtures?
2015-12-16 12:43:59
Finally AC :) trying to solve for 2 days...output should be 0 for N=1
2015-11-20 21:09:16
My second dp on my own, confidence level is increasing.
2015-10-18 03:23:54 Jian Luo
my first DP, it took me 1 week to do it correctly. But it worth the time. :-)
2015-09-07 13:15:36 Harsh Vardhan Ladha
Top-Down DP
2015-09-07 07:40:08
kripya gyani na bane. apna gyan apne paas rakhe (don't spoil the party)
2015-07-31 07:05:07 Surbhi Jain
Given link not working..pls see
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