#include <iostream>
using namespace std;
int n,a[105],d[105];
int main()
{
	cin>>n;
	a[1]=1;
	a[2]=1;
	for(int i=3;i<=n;i++)
	{
		a[i]=a[i-1]+a[i-2];
	}
	for(int i=1;i<=n;i++)
	{
		cin>>d[i];
		if(a[i]!=d[i])
		{
			cout<<i<<endl;
			break; 
		}
	}
	for(int i=1;i<=n;i++)
	{
		cout<<a[i]<<" ";
	}
    return 0;
}

#include <iostream>
using namespace std;
int a[11],n,p;
int main()
{
    cin >> n;
    for(int i=1;i<=n;i++)
    {
        cin >> a[i];
    }
    for(int i=3;i<=n;i++)
    {
        if(a[i]!=a[i-2]+a[i-1])
        {
            p=i;
            break;
        }
    }
    cout << p << endl;
    cout << 1 << " " << 1 << " ";
    for(int i=3;i<=n;i++)
    {
        a[i]=a[i-2]+a[i-1];
        cout << a[i] << " ";
    }
}