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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.
题目描述:
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输入:
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Each case contains a number n and you are expected to calculate Fn.(0<=n<=30) 。
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输出:
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For each case, print a number Fn on a separate line,which means the nth Fibonacci Number.
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样例输入:
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1
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样例输出:
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1
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来源:
#include<stdio.h>
int fib(int n)
{
if(n==1||n==2)
return 1;
else
return fib(n-1)+fib(n-2);
}
int main()
{
int n=0,i=1,j=1,m=0;
while(scanf("%d",&n)!=EOF)
{
printf("%d\n",fib(n));
}
return 0;
}
/**************************************************************
Problem: 1092
Language: C
Result: Accepted
Time:20 ms
Memory:912 kb
****************************************************************/