fibo.cpp

#include<bits/stdc++.h>
using namespace std;
int main()
{
    int input,n,i,j,arr[100] = {0,1};
    cin>>input;
    for(i=2; i<=input;i++)
    {
        arr[i] = arr[i-1]+arr[i-2];

    }
    cout<<arr[input];


}