Compilare: main.cpp: In member function 'void graf::bfs(int)': main.cpp:76:9: warning: unused variable 'd' [-Wunused-variable] 76 | int d = 0; | ^ main.cpp: In constructor 'graf::graf()': main.cpp:26:21: warning: iteration 100002 invokes undefined behavior [-Waggressive-loop-optimizations] 26 | dist[i] = -1; | ~~~~~~~~^~~~ main.cpp:25:26: note: within this loop 25 | for(int i = 1; i <= 100003; i++) | ~~^~~~~~~~~