#include <iostream>
#include <string>
int main()
{
long suma = 0;
for (long i = 1; i < 10; i++)
{
long power = 1 << i;
long number = 1 << power;
suma += number;
}
std::cout << suma << std::endl;
}
Unde 1 << n e shiftare pe biti, si inseamna 2 la puterea n.
