Heloo coders, happy Lunar New Year to everyone. I'm here today to ask about the scoring system on codeforce especially in the contest scores. Firstly, in div3 the score is usually like + +1 +2 +3 +4 +5,... I don't know how that works. (I do understand how pen works tho) Secondly, in div1 div2, although the submit is full AC, people have different scores from each other, some even have negative red scores. I would really appreciate it if anyone can explain this to me, happy new year again and have fun coding.:D