EOJ Monthly 2020.9 Sponsored by TuSimple B. 健康监测计划 题目链接 规律题~ 对于 k k k 为偶数的时候,就是取 k 2 \frac{k}{2} 2k 次叶子(一次是指取当前图中的所有叶子结点,且每取一次叶子结点都要删去),当 k k k 为奇数的时候,多取一个结点,AC代码如下: #include <bits/stdc++.h>us
签到题 GLucky 7 in the Pocket Time Limit: 1 Second Memory Limit: 65536 KB BaoBao loves number 7 but hates number 4, so he refers to an integer as a "lucky integer" if is divisible by 7 but