Compilare: user.cpp: In function ‘void BFS(int)’: user.cpp:31:9: warning: unused variable ‘contor’ [-Wunused-variable] int contor=0; ^ user.cpp: In function ‘void losung()’: user.cpp:96:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<solaux.size();i++) ^ user.cpp:106:24: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<sol.size();i++) ^ user.cpp:83:22: warning: unused variable ‘nr_drum_optim’ [-Wunused-variable] int drum_optim,i,nr_drum_optim=0; ^