Compilare: main.cpp: In member function 'int Solver::BipartiteMatcher::get_matches()': main.cpp:56:34: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<bool>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 56 | for(int i = 0; i < viz.size(); i++) viz[i] = false; | ~~^~~~~~~~~~~~ main.cpp: In function 'bool Solver::compute_parity(std::vector<int>&)': main.cpp:130:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 130 | for(int i = 0; i < perm.size(); i++) { | ~~^~~~~~~~~~~~~