E - Fibonacci

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题目描述
Time Limit: 1000 ms
Memory Limit: 256 mb

    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.

输入输出格式
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.
输入输出样例
输入样例#:
1
输出样例#:
复制
1
题目来源
上海交通大学机试题

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