Explation for non Chinese people:

English Translation China's informatics competition system comprises ‌CSP, NOIP, Provincial Selection , NOI, and IOI‌. ‌CSP (Computer Software Proficiency Test)‌: Entry-level certification serving as ‌qualification screening‌. ‌NOIP (National Olympiad in Informatics in Provinces)‌: Provincial contest where participants nationwide take the same exam for awards. ‌Provincial Selection : ‌Organized by individual provinces‌ (usually after NOIP). Combines NOIP results and other factors to select members for the ‌provincial team‌. ‌NOI (National Olympiad in Informatics)‌: ‌National final‌. Provincial team members compete for medals, and the ‌National Training Team‌ is selected. ‌IOI (International Olympiad in Informatics)‌: ‌Premier international contest‌. Team China members, chosen from the National Training Team, compete globally. This system features ‌progressive, tiered selection‌: CSP starts the journey; NOIP and Provincial Selection form the provincial stage; NOI is the national pinnacle and selects for internationals; culminating in representing China at IOI. It aims to identify and nurture top computing talent from local to global levels.

This is our competition levels (Translated by AI), and RP equals to lucky(although it truly corresponds to 人品 in Chinese). RP++ is a wish for good grades.