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Fibonacci

[编程题]Fibonacci
  • 热度指数:16784 时间限制:C/C++ 1秒,其他语言2秒 空间限制:C/C++ 64M,其他语言128M
  • 算法知识视频讲解
    The Fibonacci Numbers{0,1,1,2,3,5,8,13,21,34,55...} are defined by the recurrence:     F0=0 F1=1 Fn=Fn-1+Fn-2,n>=2     Write a program to calculate the Fibonacci Numbers.

输入描述:
    Each case contains a number n and you are expected to calculate Fn.(0<=n<=30) 。


输出描述:
   For each case, print a number Fn on a separate line,which means the nth Fibonacci Number.
示例1

输入

1

输出

1

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