brianfry713 -> how are you so good at test cases?

[mgavin2]

I'm wondering how you've developed the strategy to determine critical test cases so that I may share the knowledge with others.

Thanks in advance!

[brianfry713]

I often write test case generators using rand().

[mgavin2]

that's so smart... why was I trying to rely on human ingenuity

would you do this during an actual contest? to make it feasible for that enviroment

[brianfry713]

I don't know if I understand your question.

If I'm participating in a contest, I'll usually just write the code to solve the problem. The only time I might write a test case generator is if I'm able to write a brute force TLE solution and I want to compare my WA code against it for small inputs.

I often write test case generators to help other people find test cases their code is failing on and compare their output to my AC code.

I sometimes create input for this online judge, and I might use a random test case generator for that.