Compilare: main.cpp: In member function 'int Dinic::dfs(int, int)': main.cpp:29:30: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 29 | for(int &cid = ptr[u]; cid < L[u].size(); ++cid) { | ~~~~^~~~~~~~~~~~~ main.cpp: In member function 'int Dinic::max_flow()': main.cpp:66:13: warning: suggest parentheses around assignment used as truth value [-Wparentheses] 66 | while(nf = dfs(s, flow_inf)) re += nf; | ~~~^~~~~~~~~~~~~~~~~~