牛客多校第六场 --- C Generation I

连接：https://www.nowcoder.com/acm/contest/144/C 来源：牛客网c++ Generation I 时间限制：C/C++ 3秒，其余语言6秒 空间限制：C/C++ 262144K，其余语言524288K 64bit IO Format: %lld 题目描述 Oak is given N empty and non-repeatable sets which a

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