Compilare: main.cpp: In member function 'bool EdmondKarp::BFS()': main.cpp:38:24: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i=0; i<graph->size(); ++i) ~^~~~~~~~~~~~~~ main.cpp: In function 'void readInput()': main.cpp:75:19: warning: unused variable 'j' [-Wunused-variable] for (int i=1, j, x, y; i<=N; ++i) { ^ main.cpp:75:22: warning: unused variable 'x' [-Wunused-variable] for (int i=1, j, x, y; i<=N; ++i) { ^ main.cpp:75:25: warning: unused variable 'y' [-Wunused-variable] for (int i=1, j, x, y; i<=N; ++i) { ^