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993 - Product of digits

Posted: Thu Jan 04, 2007 6:34 am
by Darko
It looked simple, I am not sure what I am missing...

This is some I/O (again, problem seemed easy), I have no idea what else I can do:

Code: Select all

5
0
1
216
1999
1000000000

Code: Select all

10
1
389
-1
555555555888
I tried printing "0", "10" and "01"(?!) for n=0. (I think that by "natural number" they mean "positive integer", but some people include a zero). Very puzzling.

Posted: Thu Jan 04, 2007 7:16 am
by Observer
Hello,

I am also getting WA. And I believe my code is right.

I also get the same output as yours for the cases you posted.

Posted: Thu Jan 04, 2007 7:37 am
by tobby
I get wrong answer too. For N = 0 I try "0", "10", ""(empty string), "-1", all give me wrong answer.

Posted: Thu Jan 04, 2007 12:38 pm
by Observer
Seems that this has been rejudged, and we all get AC~

Maybe 0 is not in the judge input?

Posted: Fri Mar 02, 2007 5:24 pm
by jan_holmes
Hi, I just solved this problem... but I was shocked knowing that my code got AC with 0.002 secs... because the way I used is just a raw recursion (without memoization) and I think for 10^9, my code needed more time to produce the correct output. What do you think ? Is it possible that the limit for this problem is < 10^9 (i.e. 10^6,etc) ?

Posted: Wed May 02, 2007 4:00 am
by cytmike
The inputs to this problem is actually very easy to solve LOL

Posted: Fri May 18, 2007 11:14 am
by Piklu_sust
Try with the input:
1
12

Output will be:
26

Posted: Wed Jul 04, 2007 3:20 am
by sclo
They should post some output that would make bruteforce TLE, like making N a 64bit integer.

Everyone should just use dp.

Posted: Wed Jul 04, 2007 3:33 am
by mf
Everyone should just use dp.
There's a simple greedy solution.

Posted: Wed Jul 04, 2007 4:18 am
by sclo
Yes, my dp is actually so optimized that it is greedy.

Posted: Sun Nov 04, 2007 4:10 am
by mohsincsedu
I got AC...

Here is some I/O:
Input:

Code: Select all

5
0
1
17
34
22
Output:

Code: Select all

10
1
-1
-1
-1

It may be help...

993 - Product of digits

Posted: Mon Jun 23, 2008 4:10 pm
by hasib_bd
Followings are some inputs/outputs generated by my AC code:
Input:

Code: Select all

17
10 
123456789
216
1999
1000000000
888888888
12
24
32
48
17
34
22
288
96
1
0
Output:

Code: Select all

25
-1
389
-1
555555555888
-1
26
38
48
68
-1
-1
-1
489
268
1
10

993 - Product of digits

Posted: Thu Apr 09, 2009 11:08 pm
by sazzadcsedu
can anyone give me some hints how to solve it???
is it to find prime factor???then multiply them in some arrangement???

Re: 993 - Product of digits

Posted: Fri Apr 10, 2009 6:37 am
by helloneo
sazzadcsedu wrote:can anyone give me some hints how to solve it???
is it to find prime factor???then multiply them in some arrangement???
Well.. You might want to divide by 9 rather than 33, or 8 rather than 24
The higher digit is the better.. Do you think so?

Re: 993 - Product of digits

Posted: Thu Aug 18, 2011 6:05 am
by CSGrandeur

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