Compilare: main.cpp: In function 'int corect(std::string)': main.cpp:15:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 15 | for(i = 1; i < s.size(); i++) | ~~^~~~~~~~~~ main.cpp: In function 'int B2(std::string)': main.cpp:29:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 29 | for(i = 0; i < s.size(); i++) | ~~^~~~~~~~~~ main.cpp:31:38: warning: suggest parentheses around '-' inside '<<' [-Wparentheses] 31 | nr += (1 << s.size() - i - 1); | ~~~~~~~~~~~~~^~~ main.cpp: In function 'int main()': main.cpp:39:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 39 | for(i = 0; i < sir.size(); i += 8) | ~~^~~~~~~~~~~~