MINCOUNT - Move To Invert

A triangle made of coins of height h is as follows
It has h coins at the base and h-1 coins one level above base and so on.(Coins are placed as shown in the figure below)
And at the top most level there will be only one coin
Now given h the task is to invert this triangle by moving minimum number of coins. For example when h=4 triangle is
Invert
For h=4 at least 3 coins must be moved to invert it.

Input

In the first line N will be given and then N lines follow with each line having a integer which is the height of triangle in that test case.00≤h<1010;

Output

For each test case output in a seperate line the minimum number of moves required to invert the triangle. Output fits in long long data type

Example

Inputt:
1
3

Output:
2

Added by:Abhilash I
Date:2006-12-16
Time limit:1s
Source limit:50000B
Memory limit:1536MB
Cluster: Cube (Intel G860)
Languages:All except: ERL JS-RHINO
Resource:IIIT Hyderabad Local Programming Contest

hide comments
2010-08-08 18:27:58 Nathaniel Barshay
Although the problem statement allows for an answer outside of a 64-bit integer, the test cases all fall in the 64-bit range.
2010-08-04 12:00:10 Curiosa
someone can explain the example in the image? i need 4 moves for h=4
2010-04-17 20:34:24 subhadeep maji
nice little math :)
2010-04-07 05:05:36 :(){ :|: & };:

I wonder if there is any programmatic solution for this task, since all I used is simple math.
2010-03-21 18:53:56 vimal raj sharma old account
@Sergey Ushacov

how are u saying that correct ans. for 10000000000 is 7 443 294 631 478 557 525

i think that
"dreivaj (Slash at the moment)"'s
solution is right mine is also giving the same
:)
2010-03-12 06:33:04 Zubaidullo
yehhhh. I have AC. (i use STADIO.H with float)
2010-02-14 14:32:08 Core2Duo
The test cases dont seem to be having inputs till 10^10.
The correct ans for 10^10 cannot b stored in long long int in C++, still I get AC!
2010-01-26 13:19:22 ☻Daniel Alberti Proenza☻
What is the correct answer for h = 10 and h = 11?
2010-01-20 07:55:31 Super Lại Mạnh Tuấn
What is the correct answer for h=6 and h=7 ?

Last edit: 2010-01-20 08:05:41
2009-10-07 18:04:36 Sergey Ushacov
The correct answer for h = 10000000000 is
7 443 294 631 478 557 525
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