1.出现错误查询 Error querying , Communications link failure
#Error querying database.Cause:com.mysql.cj.jdbc.exceptions.CommunicationsException:Communications link failure
The last packet successfully received from the server was 10,016 milliseconds ago.
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1899A - Game with Integers 题意:给定一个数 , 两个人玩游戏,每人能够执行 操作,若操作完是3的倍数则获胜,问先手的人能否获胜(若无限循环则先手的人输)。 思路:假如一个数模3余1或者2&#…