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My first submit got WA#8, my second WA#9, my third got WA#10 of course. I  am going so straight,  so incrementally.  Maybe author made tests in such an amazing increasing-difficulty way.

Edited by moderator 03.12.2019 21:46

I was so stupid not to check the distance in case when arc of fire is zero degrees and gnusmas is on the line.