solutia de 100 de puncte! daca doresti explicatie, scrii in comentarii
#include <iostream>
using namespace std;
int main() {
unsigned long long int x, n, k, a, b, c, sem;
cin >> n;
for (int i = 1; i <= n; i++) {
cin >> x;
k = x / 2;
a = k;
b = k + 1;
c = 2 * k + 1;
sem = 0;
if (a % 3 == 0) {
a /= 3;
sem = 1;
}
if (b % 3 == 0 && sem == 0) {
b /= 3;
sem = 1;
}
if (c % 3 == 0 && sem == 0) {
c /= 3;
sem = 1;
}
cout << 2 * a * b * c + (x * (x + 1) / 2) * (x % 2) << " ";
}
return 0;
}
