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.
hide comments
sayedathar11:
2016-06-16 07:50:12
very nice problem teaches you dp and map datastructures and also a new way of input ac in one go :)
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code1monkey1:
2016-06-12 10:14:41
map is the saviour
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macbox:
2016-06-08 06:50:45
Easy Logic but need to use some tricks |
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top_gun007:
2016-06-05 13:08:00
learned something new..worth it |
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get_right_jr:
2016-06-02 19:34:19
AC!!!!
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blueranger:
2016-06-02 18:23:21
Time: 0.00, Memory: 3.3M, C++
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mayank220588:
2016-05-26 20:52:37
how to ensure of two inputs only?
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azam_9:
2016-05-24 15:58:55
WA using vector..AC using maps..dont knw y?? |
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Umesh Kumar Singla:
2016-05-24 14:06:56
@vstepano Please correct the 4th test case to either 999 -> 1370 or 9999(mind the four 9's) -> 16615 |
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rohit_sharma:
2016-05-24 14:05:55
Getting TLE for input > 10^8 on ideone... but it is taking 3 seconds on my local environment .. how is that possible ??? I thought time limit was 9 sec. Working with Java.
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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 |