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    Suppose there is a pair of newborn bunnies in the pasture in the first month, each pair of male and female bunnies grew into a large male and female rabbits after two months later. After three months from the start, each pair of male and female rabbit can give birth to a pair of small bunnies every month. If the rabbits can live forever, how many pair of rabbits in the pasture in the first N month?

(1<=N<=90)(Very IMPORTANT)

Input

3

Output

2

 

Input

5

Output

5

 

Input

88

Output

1100087778366101931

[Exam] asked in Midterm
ID: 23785 - Available when: Unlimited - Due to: Unlimited

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44 Answers

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Hidden content!
#include<stdio.h>

#include<stdlib.h>

#include<string.h>

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answered by (-384 points)
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Hidden content!
#include<stdio.h>

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answered by (-367 points)
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Hidden content!
#include<stdio.h>

int main ()

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answered by (-367 points)
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Hidden content!
#include <stdio.h>







long long int rabbit(int n)



{


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answered by (-215 points)
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