I just found out about the anti-AI trap in Educational Codeforces Round 190, specifically in problem C and problem D.

Then I checked coder2803's submissions. For problem C, he made 4 submissions: the first three got WA on test 1 (maybe he didn’t test locally?), and the last one finally got AC.

What caught my attention was that, in the accepted submission, he used the variable name multTestQ to read the number of test cases — which happens to be the exact anti-AI trap variable name.

Maybe it was just a coincidence, right? coder2803