optimized code

[Anshuman7080]

Removed Unused Includes: Removed <bits/stdc++.h> in favor of only the necessary headers (, , and ). This makes it clearer which libraries are actually being used.

Simplified Power of 2 Check: Instead of using log2 and checking conditions to see if n is a power of 2, I replaced it with a more straightforward bit manipulation check (n & (n - 1)) == 0, which is a standard way to check if a number is a power of two.

Using Vector: Replaced the static array with a std::vector to handle powers of two dynamically, making the code cleaner and avoiding arbitrary limits.

Efficiently Handling Input and Output: Used ios_base::sync_with_stdio(false) and cin.tie(nullptr) to speed up the input and output operations, which is especially useful for competitive programming.

Cleaner Logic: Removed unnecessary variables and streamlined the logic for summing powers. The for loop constructs and conditions are made clearer.

Removed Redundant Code: The commented-out sections and unnecessary calculations were removed to simplify the overall logic and improve readability.