发布于
2022-7-5
摘要：
You are given a permutation a1,a2,…,ana1,a2,…,an of integers from 00 to n−1n−1. Your task is to find how many permutations b1,b2,…,bnb1,b2,…,bn are si 阅读全文
海上月是天上月，眼前人是心上人。
Hi, Toretto!
You got to put the past behind you before you can move on.
Scroll Down
