General information
This contest contains problems from the Electronic Contest of the Challenge 24 Extreme Programming Contest. The EC is an elimination round before a 24 hour on-site contest in Budapest, Hungary.
As some members of SPOJ team have taken part in the contest (and even won in 2006), we have decided to create this site to let you practice before the next EC.
Uploading text solutions
The test cases on SPOJ are taken directly from the original EC. You can download them from Challenge 24 website, solve them using your home-built PS3 cluster ;), and upload the solutions. Or, you can upload a program that solves the test cases in the format described and let SPOJ solve the test cases for you.
If you want to upload a text file containing the solutions to the test cases from EC, you must follow the format:
#1 solution to test case 1 #2 solution to test case 2 #5 solution to test case 5 #
You can upload the solutions one by one, or all in a single submission. The test result on status page will contain a binary number which will tell you which solutions have been approved (e.g. 1001000001 means that tests 1, 4, and 10 have been solved).
Example: if you copy the following paragraph and submit it as a solution to Problem A, you should get exactly one point for solving test case number 1.
#1 1013 9675 #
Uploading electronic solutions
If you want to solve the electronic variant of a problem, you must upload source code for a computer program that strictly follows the specified input and output.
Scoring
The ranking system will sum the result over all your submissions. You may decide to upload your source code, notice that it only manages to solve 6 cases within the time limit on SPOJ, and then upload the rest as text files. You will still get 10 points for solving the problem!
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