Compilare: main.cpp: In member function 'void Dinic::add_edge(int, int, int, int)': main.cpp:31:31: warning: narrowing conversion of '(&((Dinic*)this)->Dinic::g.std::vector<std::vector<Dinic::edge> >::operator[](((std::vector<std::vector<Dinic::edge> >::size_type)v)))->std::vector<Dinic::edge>::size()' from 'std::vector<Dinic::edge>::size_type' {aka 'long unsigned int'} to 'int' [-Wnarrowing] 31 | edge a = {v, g[v].size(), 0, w, id}; | ~~~~~~~~~^~ main.cpp:32:31: warning: narrowing conversion of '(&((Dinic*)this)->Dinic::g.std::vector<std::vector<Dinic::edge> >::operator[](((std::vector<std::vector<Dinic::edge> >::size_type)u)))->std::vector<Dinic::edge>::size()' from 'std::vector<Dinic::edge>::size_type' {aka 'long unsigned int'} to 'int' [-Wnarrowing] 32 | edge b = {u, g[u].size(), 0, 0, -2}; | ~~~~~~~~~^~ main.cpp: In member function 'int Dinic::dfs(int, int)': main.cpp:60:33: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<Dinic::edge>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 60 | for(int &i = done[u]; i < g[u].size();i++) { | ~~^~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:103:12: warning: unused variable 'm' [-Wunused-variable] 103 | int n, m; | ^ main.cpp:128:9: warning: unused variable 'sol' [-Wunused-variable] 128 | int sol = G.max_flow(src, trg); | ^~~