Given the following c++ code, improve the code by eliminating length calls out of the loop, put most used variables first when initializing variables, use prefix operators rather than postfix operators, loop unrolling, and any other improvements you would like to make to improve performance. note, the order of the output is not important, all data should be output.#include #include #include using namespace std; int main(int argc, char* argv[]) { double sum=0; vector price; vector game; vector designer; price. push_back(53.41); game. push_back("carcassone"); designer. push_back("wrede"); price. push_back(46.51); game. push_back("agricola"); designer. push_back("rosenberg"); price. push_back(31.02); game. push_back("puerto rico"); designer. push_back("seyfarth"); for(int i=0; i