Compilare: user.cpp: In function ‘void Solve()’: user.cpp:53:9: warning: unused variable ‘lo’ [-Wunused-variable] int lo = 1, hi = k, mid; ^ user.cpp:53:17: warning: unused variable ‘hi’ [-Wunused-variable] int lo = 1, hi = k, mid; ^ user.cpp:53:25: warning: unused variable ‘mid’ [-Wunused-variable] int lo = 1, hi = k, mid; ^ user.cpp: In function ‘bool Dijkstra(int)’: user.cpp:88:9: warning: unused variable ‘value’ [-Wunused-variable] int value = W; ^ user.cpp: In function ‘void Solve()’: user.cpp:79:36: warning: ‘lanterna’ may be used uninitialized in this function [-Wmaybe-uninitialized] fout << dmin << ' ' << lanterna; ^