摘要：
An undirected connected graph has $n$ nodes and $m$ edges, The $i$-th edge’s length is $2^i$. Each node $i$ has a value $a_i$, which is either $0$ or 阅读全文
摘要：
https://vjudge.net/contest/387998#problem/I 题意： 判断证明：任意进制数y，如果y%x = 0，那么 （y所有位数之和）%x = 0 思路： 思维题 可以通过观察证明 参考证明方法：https://blog.csdn.net/m0_46209312/art 阅读全文
摘要：
https://vjudge.net/contest/387998#problem/B Little Rabbit is interested in radix. In a positional numeral system, the radix is the number of unique di 阅读全文
摘要：
https://vjudge.net/contest/387998#problem/A Because of the thriller adventure game The 3rd Building, there are fewer and fewer students who would like 阅读全文