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ONEZERO - Ones and zeros

Certain positive integers have their decimal representation consisting only of ones and zeros, and having at least one digit one, e.g. 101. If a positive integer does not have such a property, one can try to multiply it by some positive integer to find out whether the product has this property.


Number K of test cases (K is approximately 1000);
in each of the next K lines there is one integer n (1 <= n <= 20000)


For each test case, your program should compute the smallest multiple of the number n consisting only of digits 1 and 0 (beginning with 1).



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admiraldoge: 2015-09-15 20:23:02

Accepted in 1 go....................................... after a week of thinking this, even in the bed :/

[Mayank Pratap]: 2015-09-01 14:42:52

Pushing strings.... 7.2 s
Backtracking 0.1 s....

Last edit: 2015-09-01 17:21:27
rini22: 2015-08-19 13:53:50

weak test cases

nehaa: 2015-07-26 12:07:35

can someone to solve this problem..
even if i use BFS and store numbers as string, then how to get number from large strings greater than 64 bits and check if it is fully divisible by given integer, or there is some other way to this.

Last edit: 2015-07-26 12:07:56
Mayank Ladia: 2015-06-23 00:48:13

Literally very weak test case....
I have printed "Pokemon" when n==1,
then too its accepting :p ....

Last edit: 2015-06-23 00:52:06
Shubham: 2015-06-11 15:34:08

learnt a lot....had to take some help..for the record long long will pass easily..test case r weak....dont use string ...:D

Saurabh Uttam: 2015-06-01 16:17:50

weak test case add 9999

V Y: 2015-05-21 19:01:29

If the number is even: result = str(foo(num/2))+'0'. But will this help?

i_am_looser: 2015-05-21 08:09:15

wow feeling good ..... Brilliant question : )

Mukesh Gupta: 2015-05-07 13:21:00

problem can be solve without using bfs. hint: using complete binary tree

Added by:PaweĊ‚ Dobrzycki
Time limit:8s
Source limit:4096B
Memory limit:1536MB
Cluster: Cube (Intel Pentium G860 3GHz)
Languages:All except: NODEJS PERL 6
Resource:II Polish Olympiad in Informatics, Ist Stage