Compilare: main.cpp: In function 'int main()': main.cpp:54:20: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare] 54 | if (sol.size() != m + 1) cout << -1; | ~~~~~~~~~~~^~~~~~~~ main.cpp:55:28: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 55 | else for (int i = 0; i < sol.size() - 1; i++) cout << sol[i] << " "; | ~~^~~~~~~~~~~~~~~~