Compilare: main.cpp: In member function 'int Dinic::dfs(int, int, int)': main.cpp:78:28: warning: comparison of integer expressions of different signedness: '__gnu_cxx::__alloc_traits<std::allocator<int>, int>::value_type' {aka 'int'} and 'std::vector<Edge>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 78 | while (start[node] < gr[node].size()) { main.cpp: In member function 'int Dinic::maxflow()': main.cpp:97:25: warning: suggest parentheses around assignment used as truth value [-Wparentheses] 97 | while (flow = dfs(source, sink, INF)) | ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:215:26: warning: unused variable 'SIGMA' [-Wunused-variable] 215 | static constexpr int SIGMA = 26; | ^~~~~