Compilare: main.cpp: In member function 'void graf::bfs(int)': main.cpp:27:13: warning: unused variable 'i' [-Wunused-variable] 27 | int i, d = 0; | ^ main.cpp:27:16: warning: unused variable 'd' [-Wunused-variable] 27 | int i, d = 0; | ^ main.cpp: In constructor 'graf::graf()': main.cpp:52:21: warning: iteration 100002 invokes undefined behavior [-Waggressive-loop-optimizations] 52 | dist[i] = -1; | ~~~~~~~~^~~~ main.cpp:51:26: note: within this loop 51 | for(int i = 1; i <= 100003; i++) | ~~^~~~~~~~~