Ranking rules explanation: The current ranking supports two modes: ACM/ICPC and OI.

ACM/ICPC mode: Rankings are based on the number of solved problems. When the number is equal, rankings are based on penalty time, where penalty time = time of each problem solved + 20 minutes per error. For each submission by any user for each problem, there are only two scenarios: passed or not passed. If passed, the number of solved problems increases by 1, and the [time of each problem solved + 20 minutes per error] is included in the penalty time. If not passed, neither the number of solved problems nor the penalty time is counted.

OI mode: Rankings are based on scores. When scores are equal, rankings are based on penalty time (as with ACM/ICPC). For each submission by any user for each problem, the score is calculated based on the proportion of passed data, with a full score of 100 points. Please note that each problem's score will be the final score of the last submission!