Problem

2 /10


功能

Problem

具有自然参数和值的函数 f 定义如下：
 
f(0) = 0
f(1) = 1
f(2n) = f(n)
f(2n + 1) = f(n) + f(n + 1)
编写程序计算给定n的f(n)。
 
输入
给定一个数字 n (1 ≤ n ≤ 1018).
 
输出
打印f(n)
  <表> <正文> 输入 输出 10 3

time 1000 ms
memory 256 Mb
Rules for program design and list of errors in automatic problem checking

Teacher commentary

Your Program

Attach a file with the source code of the program:

or select a programming language and type your program

Auto

       

Program check result To check the solution of the problem, you need to register or log in!