>>57
#include <iostream>
using namespace std;
int main()
{
int *a, i, n, s;

cin >> n;

a = new int[n];

for(a[0] = a[1] = 1, i = 2; i < n; i++) a[i] = a[i - 1] + a[i - 2];

for(i = s = 0; i < n - 2; i++) s += a[i];
cout << "Σ[" << n - 2 << ",i = 1]ai = " << s << ", a[" << n << "] = " << a[n - 1] << endl;

for(i = s = 0; i < n - 1; i++) s += a[i] * a[i];
cout << "Σ[" << n - 1<< ",i = 1]ai^2 = " << s << ", a[" << n - 1 << "] * a[" << n << "] = " << a[n - 1] * a[n - 2] << endl;

delete [] a;
}