Compilare: main.cpp: In function 'void bfs(const Edge&)': main.cpp:32:22: warning: unused variable 'col' [-Wunused-variable] 32 | int u = e.u, col = e.c, i = e.i; | ^~~ main.cpp:32:33: warning: unused variable 'i' [-Wunused-variable] 32 | int u = e.u, col = e.c, i = e.i; | ^