我们创建如下的三层继承层次类. public abstract class Animal { public abstract void ShowType(); } public class Bird : Animal { private string type = "Bird"; public override void ShowType() { Console.WriteLine("Type is {0}", type); } } public class Chi…
题意: 给你一个“斐波那契”字符串数列,第n项由第n-1项和第n-2项拼接而成,输出某项的某位及其后10位. 题解: 递归求解即可. #include<bits/stdc++.h> using namespace std; typedef long long LL; typedef unsigned long long uLL; typedef long long ll; typedef pair<int, LL>P; ; ; ; const LL lINF = 0x3f3f3f3…
题目地址: https://ac.nowcoder.com/acm/contest/890/B 时间限制:C/C++ 1秒,其他语言2秒空间限制:C/C++ 524288K,其他语言1048576K64bit IO Format: %lld 题目描述 Dr. JYY has just created the Coffee Chicken strings, denoted as S(n). They are quite similar to the Fibonacci soup --- tod…
Long is a huge fan of CFC (Codeforces Fried Chicken). But the price of CFC is increasing, so he decides to breed the chicken on his own farm. His farm is presented by a rectangle grid with rr rows and cc columns. Some of these cells contain rice, oth…