摘要：
链接：https://ac.nowcoder.com/acm/contest/11259/K 来源：牛客网 题目描述 On a distant planet of dreams, Toilet-Ares is packing up the things and memories, ready to 阅读全文
摘要：
链接：https://ac.nowcoder.com/acm/contest/11259/D 来源：牛客网 题目描述 There are two sequences of length n−1n−1, b=(b2,b3,…,bn)b=(b2,b3,…,bn), c=(c2,c3,…,cn)c=(c2 阅读全文