Hello Everyone,

I am writing this to bring your attention to a problem I recently faced due to the ambiguous judging system of Codeforces. In this contest I submitted my solution to problem C in this contest, but faced a weird problem in that, actually when I used the C++17 (GCC 7-32) compiler to submit, I got wrong answer on test case 12 (here is the submission). But when I switched to the C++20 compiler it got accepted (here is the submission), while I submitted exactly same code.

I am writing to bring immediate attention to this problem as it may cause problems in the future. I will be glad if someone points out my mistake if any, and if not that this should be solved as soon as possible. MikeMirzayanov please do the needful.

Thanks.