Important Instructions for Contests
arjunarul Sep 21st, 2018 (edited) 165 Never
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- 1. Test Files and Time Limits:
- For every submission submitted, the back-end judge on SPOJ gets occupied for a time, which is a product of number of test cases and time limit of that problem. Let's call this product P. For example, if a particular problem has 10 test files, each with a time limit of 3 seconds, that would lead to a product of P = 30 seconds for which the judge could potentially be occupied.
- During rated contests, because of the huge number of submissions, even though we ramp up the number of judges, it gets overloaded if P is too high. And then the users end up having to wait for a long time for their verdict, and in worst cases has even led to contests being cancelled. So it is very vital that you keep this in mind.
- In particular, for Cakewalk problems, P should be 1. That is, a single file, with time limit of 1. This is very very important because the load is particularly high at the beginning of the contest due to everyone submitting the Cakewalks.
- For Simple, you should have P <= 4.
- For Easy, P <= 8.
- For Easy-Medium, P <= 12.
- For harder problems you can have upto 20.
- If you need to go above any of these limits, please get an explicit approval from one of our admins.
- 2. Each and every problem should have at least 2 independently written codes which get AC.
- 3. At least one code for each problem should have proper asserts. That is, all the constraints mentioned in the problem statement should be asserted in the code.
- 4. Input File Formatting:
- Make sure that the formatting inside your input files are perfect. White-spaces matter for languages like Python while parsing it.
- There should be no extra space at the end of a line. For example, if you are giving n elements of the array, you'll have a space after every element, but there shouldn't be a space after the last element.
- Your file should end with a new line. That is, there should be exactly 1 empty line at the end of the file.
- This needs to be tested using the functions given in this dummy code: https://pastebin.com/H8eJ5XJn
- The functions should be self explanatory mostly. k=readIntLn(a, b); reads an int and asserts that the value is in [a, b] and that this int is followed by a Line Break (ie. this is the end of the line). Similarly, k=readIntSp(a, b); would assert that this int is followed by a space.
- Please write a code for each problem, which only takes the input using these functions, and outputs nothing. This should get a WA. This takes care of both asserting bounds and formatting.
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