Programming contests

ECN selejtező programozó csapatverseny, 2014. április 27.

April 27, 2014 10:30 AM – April 27, 2014 3:30 PM

The Decoder

Write a complete program that will correctly decode a set of characters into a valid message. Your program should read a given file of a simple coded set of characters and print the exact message that the characters contain. The code key for this simple coding is a one-for-one character substitution based upon a single arithmetic manipulation of the printable portion of the ASCII character set.

Input and Output Specification

For example, with the input file that contains


your program should print the message

*CDC is the trademark of the Control Data Corporation.
*IBM is a trademark of the International Business Machine Corporation.
*DEC is the trademark of the Digital Equipment Corporation.

Your program should accept all sets of characters that use the same encoding scheme and should print the actual message of each set of characters.

Sample Input

  1. 1JKJ'pz'{ol'{yhklthyr'vm'{ol'Jvu{yvs'Kh{h'Jvywvyh{pvu5
  2. 1PIT'pz'h'{yhklthyr'vm'{ol'Pu{lyuh{pvuhs'I|zpulzz'Thjopul'Jvywvyh{pvu5
  3. 1KLJ'pz'{ol'{yhklthyr'vm'{ol'Kpnp{hs'Lx|pwtlu{'Jvywvyh{pvu5
download as text file

Output for Sample Input

  1. *CDC is the trademark of the Control Data Corporation.
  2. *IBM is a trademark of the International Business Machine Corporation.
  3. *DEC is the trademark of the Digital Equipment Corporation.
download as text file
University of Debrecen; Faculty of Informatics; v. 03/01/2019