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
2018-09-07 19:44:17
how 120 for n=100
2018-09-07 08:46:48
use map instead of array, dp and recursion

Last edit: 2018-09-07 08:47:20
2018-08-07 16:17:51
used unsigned long int for array in c;
DP,recursion and memoization.
2018-08-04 11:04:40 ashish malgawa
Do we need to take in input number of test cases also?
2018-08-01 06:23:29
Got it !! 50, 33 and 25 will have a further optimal solution 57, 36 and 27 respectively. That's why the output is 120 (57+36+27)

Last edit: 2018-08-01 06:24:12
2018-07-31 18:22:32
How is the output 120 for the input 100? shouldn't it be 108(50+33+25)?
2018-07-30 09:20:31
first dp to be ac in a go!!
2018-07-27 09:27:17
Computing solutions lazily is significantly faster than preprocessing.
2018-07-23 12:18:29
AC in one go !!!
Thank you @castor21 .
2018-07-23 08:59:28
I am new to dp, and I tried to use the top-down recursive memo array of size 10^9 when I realized the problem of memory. Also part of the dp array is seldom used. But is there a way to solve the problem with this approach (instead of the suggested bottom-up dp array + recursion approach) ?
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