Hi guys,

The context is, in problem H of the just finished APAC Championship (https://codeforces.me/contest/2206/problem/H), our first code did not deal with the case where there are equal ai's, and it got Wrong Answer in the contest. However, when I tested on Codeforces, it got Runtime Error verdict on the 3rd test case, which is just the next test case other than the 2 examples given.

So, is it possible that mod 0 on Domjudge will return WA? This was one of the major reasons that caused us not to qualify to WF, we wasted ~30 mins because of the WA verdict and thought that our solution was wrong.

Thanks.