COCI 2007/2008, Contest #3
Task TAJNA
Every evening, little Ivica sends secret messages to little Marica through e-mail. Knowing Ivica's e-letter travels unguarded through the network on its way to Marica's e-mailbox, they have decided to encrypt every message using the following algorithm:
- Suppose Ivica's message consists of N characters.
- Ivica must first find a matrix consisting of R rows and C columns such that R ≤ C and R·C = N. If there is more than one such matrix, Ivica chooses the one with the most rows.
- Ivica writes his message into the matrix in row-major order. In other words, he writes the first segment of the message into the first row, the second segment into the second row and so on.
- The message he sends to Marica is the matrix read in column-major order.
Marica has grown tired of spending her precious time deciphering Ivica's messages, so you must write a program to do it for her.
Input
The input contains the received message, a string of lowercase letters of the English alphabet (with no spaces).
The number of letters will be between 1 and 100.
Output
Output the original (decrypted) message.
Examples
Inputbok Outputbok |
Inputkoaski Outputkakosi |
Inputboudonuimilcbsai Outputbombonisuuladici |
Explanation of Example 3
Ivica wants to send the message "bombonisuuladici" containing 16 letters. He can use a 1×16, 2×8 or 4×4 matrix. Of these, the 4×4 has the most rows. When the message is written into it, the matrix looks like this:
b | o | m | b |
o | n | i | s |
u | u | l | a |
d | i | c | i |
All Submissions
Best Solutions
Point Value: 5
Time Limit: 1.00s
Memory Limit: 32M
Added: Jul 30, 2013
Languages Allowed:
C++03, PAS, C, HASK, ASM, RUBY, PYTH2, JAVA, PHP, SCM, CAML, PERL, C#, C++11, PYTH3
Comments (Search)
Using scanf("%s") to read in the string gets AC, but using gets() to read in the string gets WA. Does this mean that there is leading or trailing whitespace in the input files?