摘要: C 题意:爬楼梯,每次爬1~2层,有些层不能爬 题解:斐波那契数列(标数法)递推 #include <iostream> #include <cstdio> using namespace std; const int maxn=100005; const int mod=1e9+7; int n, 阅读全文
posted @ 2020-10-12 17:10 wuwendongxi 阅读(200) 评论(0) 推荐(0)