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2020 China Collegiate Programming Contest, Weihai Site H. Message Bomb(差分/思维/好题)

作者:互联网

While we enjoy chatting with friends on the internet, it is always annoying that we are overwhelmed by lots of messages in various chat groups. A great majority of these messages are actually not interesting to us, but we may miss some important notices if we silence these groups. How many messages do we receive from all online chat groups? Nobody has ever seriously gone into this question.

As an assistant researcher in the school of informatics, you are required to investigate the number of online messages we receive every day. We have already sampled

标签:groups,cnt,group,student,Weihai,Contest,th,ans,Bomb
来源: https://www.cnblogs.com/lipoicyclic/p/14758159.html