In Codeforces Round 1028 (Div. 1), I passed problem B's pretest in the contest. And I'm confused about the status now: FST.

But after I rejudged the same code after the contest, I got Accepted. Here's the submissions:

In the contest

After the contest

Exactly the same code! and it shows that my code has normally printed the answer, but "Checker comment Exit code is -1073741819."

What should I do?

(sorry my English is poor.)

I have a question: if I submit once before, and past the pretests, and I submit a new code later, as the rule says, I will get -50 scores, but when I viewed the standing during the contest, my score of E1 changed from 944->802, and my rank fell nearly 100rks. Is this normal? Is this a bug or just a misunderstanding of the rules?