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.
Input
Number K of test cases (K is approximately 1000);
in each of the next K lines there is one integer n (1 <= n <= 20000)
Output
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).
Example
Input: 3 17 11011 17 Output: 11101 11011 11101
Added by:  PaweÅ‚ Dobrzycki 
Date:  20050526 
Time limit:  8s 
Source limit:  4096B 
Memory limit:  1536MB 
Cluster:  Cube (Intel Pentium G860 3GHz) 
Languages:  All except: NODEJS PERL 6 VB.net 
Resource:  II Polish Olympiad in Informatics, Ist Stage 
hide comments
rini22:
20150819 13:53:50
weak test cases 

nehaa:
20150726 12:07:35
can someone help...how to solve this problem..


Mayank Ladia:
20150623 00:48:13
Literally very weak test case....


Shubham:
20150611 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:
20150601 16:17:50
weak test case add 9999 

V Y:
20150521 19:01:29
If the number is even: result = str(foo(num/2))+'0'. But will this help? 

i_am_looser:
20150521 08:09:15
wow feeling good ..... Brilliant question : ) 

Mukesh Gupta:
20150507 13:21:00
problem can be solve without using bfs. hint: using complete binary tree 

Mukesh Gupta:
20150507 13:14:40
test cases are weak add 1998


happy:
20150428 14:08:19
stl string gives tle 