终端输入mvn -version报错: The JAVA_HOME environment variable is not defined correctly, this environment variable is needed to run this program. Java环境变量的问题,打开bash_profile查看 open ~/.bash_profile
export JAVA_8_HOME/Library/Java/JavaVirtualMachine…
[ICPC2021 Nanjing R] Windblume Festival
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题面翻译
给一个长度为 n n n 环形整数序列 a a a, 每次操作可以任意选择一个下标 x x x,令 $ a_x a_x - a_{(x\bmod n)1}$,之后移除 a ( x m o d n ) 1 a_{(x\bmod n)1} a(xmodn)1…