Compilare: user.cpp: In function ‘long long int findCost(std::__cxx11::string, std::__cxx11::string)’: user.cpp:156:9: warning: unused variable ‘rs’ [-Wunused-variable] int rs=0; ^~ user.cpp: In function ‘void updateRs(std::deque<long int, std::allocator<long int> >&, std::vector<std::vector<long long int> >&)’: user.cpp:171:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i=1; i<q.size(); i++) { ~^~~~~~~~~ user.cpp: In function ‘int main()’: user.cpp:208:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i=1; i<hamiltonPath.size(); i++) { ~^~~~~~~~~~~~~~~~~~~~ user.cpp:212:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i=0;i<hamiltonPath.size(); i++) { ~^~~~~~~~~~~~~~~~~~~~