Compilare: main.cpp: In function 'bool eliminareSt(int)': main.cpp:21:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 21 | for (int i = 0; i < s[st_].size(); i++) | ~~^~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:52:35: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 52 | for (int j = 0; j < s[i].size(); j++) | ~~^~~~~~~~~~~~~ main.cpp:106:35: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 106 | for (int j = 0; j < s[i].size(); j++) | ~~^~~~~~~~~~~~~ main.cpp:121:39: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 121 | for (int j = 0; j < s[stSecvCrt].size(); j++) | ~~^~~~~~~~~~~~~~~~~~~~~