CSDN library. USA Match's O-prize papers, including excellent papers on topics such as A, B, C, D, E and F, are of great research value. If you go to the CSDN library to read the O-prize thesis of the 2020 American D competition, you can download resources and study materials. Papers are often used to refer to articles that conduct research in various academic fields and describe academic research results, which are referred to as papers for short.