Compilare: main.cpp: In member function 'void Hash::update(int, int)': main.cpp:19:16: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17' 19 | for (auto& [k, v] : h[x%mod]) | ^ main.cpp: In member function 'int Hash::get(int)': main.cpp:25:22: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17' 25 | for (const auto& [k,v] : h[x%mod]) | ^ main.cpp: In function 'bool flow(int, int)': main.cpp:45:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 45 | for (int i=0; i<g[nodc].size(); ++i) | ~^~~~~~~~~~~~~~~