Compilare: main.cpp: In member function 'void Flow::add_edge(int, int, int, int)': main.cpp:27:56: warning: narrowing conversion of '((Flow*)this)->Flow::g[to].std::vector<Flow::edge>::size()' from 'std::vector<Flow::edge>::size_type' {aka 'long unsigned int'} to 'int' [-Wnarrowing] 27 | g[from].push_back({to, 0, cap, cost, g[to].size()}); | ~~~~~~~~~~^~ main.cpp:28:60: warning: narrowing conversion of '(((Flow*)this)->Flow::g[from].std::vector<Flow::edge>::size() - 1)' from 'std::vector<Flow::edge>::size_type' {aka 'long unsigned int'} to 'int' [-Wnarrowing] 28 | g[to].push_back({from, 0, 0, -cost, g[from].size() - 1}); | ~~~~~~~~~~~~~~~^~~