image.png

#include<iostream>
#include<algorithm>
#include<string>
using namespace std;

int main(void)
{
    freopen("D:\\1.txt","r",stdin);
    int a[100];
    a[1] = 1 , a[2] = 2;
    for(int i=3;i<=100;i++)
    {
        a[i] = a[i-1] + a[i-2];
        if(a[i]<0)
        {
            cout << i;
            break;
        }
        cout << a[i] << endl;
    } 
    return 0;   
}