Compilare: user.cpp: In function ‘int main()’: user.cpp:44:10: warning: this ‘if’ clause does not guard... [-Wmisleading-indentation] if (viz[c]) ^~ user.cpp:46:10: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the ‘if’ int p = v[c].size(); ^~~ user.cpp:42:14: warning: unused variable ‘d’ [-Wunused-variable] int d = q.top().first; ^