Compilare: main.cpp: In function 'long long int BFS(int, int)': main.cpp:49:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 49 | for(int j=0; j<graph[nod].size(); j++) | ~^~~~~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:78:19: warning: suggest parentheses around assignment used as truth value [-Wparentheses] 78 | while(new_flow=BFS(1,N)) | ~~~~~~~~^~~~~~~~~