Compilare: main.cpp: In function 'void afisare()': main.cpp:16:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::__cxx11::basic_string<char> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 16 | for (int i = 0; i < sol.size(); i++) | ~~^~~~~~~~~~~~ main.cpp: In function 'std::string make_string()': main.cpp:23:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::__cxx11::basic_string<char> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 23 | for (int i = 0; i < x.size(); i++) | ~~^~~~~~~~~~ main.cpp:25:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 25 | for (int j = 0; j < x[i].size(); j++) | ~~^~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:66:14: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 66 | while (i < s.size()) | ~~^~~~~~~~~~