Compilare: main.cpp: In function 'void add_edge(int, int, int)': main.cpp:20:10: warning: unused variable 'a' [-Wunused-variable] 20 | Edge a = {to, cap, 0, (int)v[to].size()}; | ^ main.cpp: In function 'int dfs(int, int)': main.cpp:50:35: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<Edge>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 50 | for (int &cid = ptr[nod]; cid < v[nod].size(); ++cid) { | ~~~~^~~~~~~~~~~~~~~