How can I make contributions?

Правка en1, от mcqueen1, 2020-12-03 06:18:52

Seeing a person who asked a question, I answered a question yesterday on Codeforces. I, however, got a downvote (also an upvote) and now my contribution is negative.

I just want to try to help others, but it seems that it decrease my contribution. Did I do something wrong? How can I increase my contribution?

(Sorry for my poor English.)

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en1 Английский mcqueen1 2020-12-03 06:18:52 373 Initial revision (published)