Compilare: main.cpp: In function 'std::string getmin(std::string&, std::string&)': main.cpp:48:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 48 | for (int i = 0; i < a.size(); i++) | ~~^~~~~~~~~~ main.cpp: In function 'void bkt(int, int)': main.cpp:127:13: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 127 | if (ind == linii.size()) | ~~~~^~~~~~~~~~~~~~~ main.cpp:130:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 130 | for (int i = 0; i < coloane.size(); i++) | ~~^~~~~~~~~~~~~~~~