Problem:
MathJax.Hub.Config({ tex2jax: { inlineMath: [["$","$"], ["\\(","\\)"]], processEscapes: true }});

Fibonacci Number

Write a program which prints $n$-th fibonacci number for a given integer $n$. The $n$-th fibonacci number is defined by the following recursive formula:

\begin{equation*}
fib(n)= \left \{
\begin{array}{ll}
1　 & (n = 0) \\
1　 & (n = 1) \\
fib(n - 1) + fib(n - 2) & \\
\end{array}
\right.
\end{equation*}

Input

An integer $n$ is given.

output

Print the $n$-th fibonacci number in a line.

Constraints

$0 \leq n \leq 44$

Sample Input 1

3

Sample Output 1

3

Solution in C (judge verdict: Time Limit Exceeded)

#include <stdio.h>

int F[44];
int fibonacci(int);
int main(){


  int i,n,A;

  scanf("%d",&n);

  A=fibonacci(n);




  printf("%d\n",A);

    return 0;

    }



  int fibonacci(int n){




int i;
 
  for(i = 0; i <= n; i++)
    {
      F[i] = 0;
    }




    if(n==0||n==1)
      return F[n]=1;

    else return F[n]=fibonacci((n-2))+fibonacci((n-1));
  }