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ACM/ICPC --> Association for Computing Machinery/International Collegiate Programming Contest
IOI --> International Olympiad In Informatics
APIO --> Asia-Pacific Informatics Olympiad
CTSC --> Chinese Team Selection Contest
CCF/NOI --> China Computer Federation/National Olympiad in Informatics
CCF/NOIWC --> China Computer Federation/National Olympiad in Informatics Winter Camp
NOIP --> National Olympiad in Informatics in Provinces
IMO --> International Mathematical Olympiad
APMO --> Asia-Pacific Informatics Olympiad
CMO --> Chinese Mathematical Olympiad
CMOWC --> Chinese Mathematical Olympiad Winter Camp
AMC --> American Mathematics Competitions
BMO --> British Mathematical Olympiad
全国小学、初中、高中、数学联赛
希望杯、华罗庚金杯、五羊杯、迎春杯、创新杯、学用杯、数学周报杯
丘成桐大学生数学竞赛
CMC --> Chinese Mathematics Competitions
CUMCM --> China Undergraduate Mathematical Contest in Modeling
./ 表示当前目录，如果你的PATH环境变量后面加上 :. ，运行文件之间就是不用加上 ./ 。