Compilare: main.cpp: In function 'int main()': main.cpp:20:23: warning: comparison of integer expressions of different signedness: 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare] 20 | if(s[i].size()>=dmax1) | ~~~~~~~~~~~^~~~~~~ main.cpp:23:28: warning: comparison of integer expressions of different signedness: 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare] 23 | else if(s[i].size()>dmax2) | ~~~~~~~~~~~^~~~~~ main.cpp:34:15: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 34 | if(dim<=s[id].size()) | ~~~^~~~~~~~~~~~~~ main.cpp:43:28: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 43 | for(int i=dim;i<s[id].size();++i) | ~^~~~~~~~~~~~~