Compilare: main.cpp: In member function 'void Solver::hopcroftKarp(const std::vector<std::vector<int> >&, const std::vector<std::vector<int> >&, std::vector<std::tuple<int, int> >&)': main.cpp:56:25: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::vector<int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 56 | for (int i = 0; i < left.size(); ++i) | ~~^~~~~~~~~~~~~ main.cpp: In member function 'void Solver::execute()': main.cpp:88:15: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17' 88 | for (auto [from, to]: matching) | ^