Description: 题目描述: 小 C 养了一些很可爱的兔子. 有一天,小 C 突然发现兔子们都是严格按照伟大的数学家斐波那契提出的模型来进行繁衍:一对兔子从出生后第二个月起,每个月刚开始的时候都会产下一对小兔子.我们假定,在整个过程中兔子不会出现任何意外. 小 C 把兔子按出生顺序,把兔子们从 1 开始标号,并且小 C 的兔子都是 1 号兔子和 1号兔子的后代.如果某两对兔子是同时出生的,那么小 C 会将父母标号更小的一对优先标号. 如果我们把这种关系用图画下来,前六个月大概…
题目链接: Problem B Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 65536/65536 K (Java/Others) Problem Description 度熊面前有一个全是由1构成的字符串,被称为全1序列.你可以合并任意相邻的两个1,从而形成一个新的序列.对于给定的一个全1序列,请计算根据以上方法,可以构成多少种不同的序列. Input 这里包括多组测试数据,每组测试数据包含一个正整数N,代表…
Problem Description You will be given a string which only contains '1'; You can merge two adjacent '1' to be '2', or leave the '1' there. Surly, you may get many different results. For example, given 1111 , you can get 1111, 121, 112,211,22. Now, you…
记住经典的斐波拉契递归和阶乘递归转换为while规律.它为实现更复杂转换提供了启发性思路. # 斐波拉契--树形递归 def fab(n): if n<3: return n return fab(n-1)+fab(n-2) def wfab(n): stacks=[(0,n,None)] while stacks: stg,n,value=stacks.pop() if stg==0: if n<3: res=n else: stacks.append((1,n,None)) stacks.…
Given a string S of digits, such as S = "123456579", we can split it into a Fibonacci-like sequence [123, 456, 579]. Formally, a Fibonacci-like sequence is a list F of non-negative integers such that: 0 <= F[i] <= 2^31 - 1, (that is, each…
The Fibonacci numbers, commonly denoted F(n) form a sequence, called the Fibonacci sequence, such that each number is the sum of the two preceding ones, starting from 0 and 1. That is, F(0) = 0, F(1) = 1 F(N) = F(N - 1) + F(N - 2), for N > 1. Given…
一.三元运算 三元运算又称三目运算,是对简单的条件语句的简写,如: 简单条件处理: if 条件成立: val = 1 else: val = 2 改成三元运算 val = 1 if 条件成立 else 2 二.智能检测文件编码 用第三方模块chardet 首先要安装chardet模块 ,用pip命令进行安装 chardet的用法 import chardet f = open("staff_table.txt","rb") data =f.read() f.clos…
using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Threading.Tasks; namespace 斐波那契数列求和 { class Program { static void Main(string[] args) { Console.WriteLine()); Console.WriteLine()); Console.WriteLine()…
1225. Flags Time limit: 1.0 secondMemory limit: 64 MB On the Day of the Flag of Russia a shop-owner decided to decorate the show-window of his shop with textile stripes of white, blue and red colors. He wants to satisfy the following conditions: Stri…