Compilare: user.cpp: In function ‘int sol(int)’: user.cpp:35:7: warning: this ‘for’ clause does not guard... [-Wmisleading-indentation] for (auto v : neighbours[u]) ^~~ user.cpp:52:9: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the ‘for’ q1.pop(); ^~ user.cpp: In function ‘int bs()’: user.cpp:73:12: warning: ‘s’ may be used uninitialized in this function [-Wmaybe-uninitialized] return s; ^