Compilare: main.cpp: In function 'int main()': main.cpp:30:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 30 | for(i = 0; i < a.size(); i++){ | ~~^~~~~~~~~~ main.cpp:56:29: warning: comparison of integer expressions of different signedness: 'std::stack<char>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare] 56 | if(stiva.size() > lmax && stiva.size() % 2 == 1) lmax = stiva.size(); | ~~~~~~~~~~~~~^~~~~~ main.cpp:16:37: warning: unused variable 'eliminat' [-Wunused-variable] 16 | int cer, i, status, lmax, cost, eliminat, j; | ^~~~~~~~ main.cpp:16:17: warning: 'status' may be used uninitialized in this function [-Wmaybe-uninitialized] 16 | int cer, i, status, lmax, cost, eliminat, j; | ^~~~~~