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;
}
