COINS - Bytelandian gold coins

In Byteland they have a very strange monetary system.

Each Bytelandian gold coin has an integer number written on it. A coin n can be exchanged in a bank into three coins: n/2, n/3 and n/4. But these numbers are all rounded down (the banks have to make a profit).

You can also sell Bytelandian coins for American dollars. The exchange rate is 1:1. But you can not buy Bytelandian coins.

You have one gold coin. What is the maximum amount of American dollars you can get for it?

Input

The input will contain several test cases (not more than 10). Each testcase is a single line with a number n, 0 <= n <= 1 000 000 000. It is the number written on your coin.

Output

For each test case output a single line, containing the maximum amount of American dollars you can make.

Example

Input:
12
2

Output:
13
2

You can change 12 into 6, 4 and 3, and then change these into $6+$4+$3 = $13. If you try changing the coin 2 into 3 smaller coins, you will get 1, 0 and 0, and later you can get no more than $1 out of them. It is better just to change the 2 coin directly into $2.


Added by:Tomek Czajka
Date:2005-05-03
Time limit:9s
Source limit:50000B
Memory limit:1536MB
Cluster: Cube (Intel G860)
Languages:All except: NODEJS PERL6 VB.NET
Resource:Purdue Programming Contest Training

hide comments
2016-04-22 01:53:29
Jst awesome. learnt top down and nice implementation of maps . Ac in 1st go :)
2016-04-19 23:03:59
Awesome DP for beginners!! was stuck with SIGXFSZ but solved it later on..
2016-03-31 20:00:34
lolypop question
2016-03-26 22:11:09
Easy one ;)
2016-03-07 13:11:42 Shubham Matta
Nice questions .... Learnt a lot about DP..
2016-03-04 16:59:16 $
Nice problem, My 50th
AC in one go ;-)
2016-02-23 22:54:49
Didn't get AC the first time because I was using a loop using !cin.eof() as the condition and I assume there is a space/newline at the end of the file.

Switched to using while (cin >> coinValue) {} and got AC.
2016-02-07 10:23:40
Nice question, compels you to learn something new
Comments helped
2016-02-07 08:27:17
My 2nd DP :)
Learnt a something new !!
2016-02-02 16:34:03 Nguyễn Hoàng Nam
how to read input in java
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