Eroare de compilare: main.cpp: In function 'int Cost_e(std::__cxx11::string)': main.cpp:20:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0; i<s.size(); i++) ~^~~~~~~~~ main.cpp: In function 'int Cost_String(std::__cxx11::string)': main.cpp:38:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < s.size(); i++) ~~^~~~~~~~~~ main.cpp:41:45: error: 'pow' was not declared in this scope sum += int(s[i]-'A'+1) * pow(5,i); ^ Non zero exit status: 1