Compilare: user.cpp: In function ‘void Read()’: user.cpp:22:9: warning: unused variable ‘z’ [-Wunused-variable] int z,y,i; ^ user.cpp: In function ‘void BellF(int, int)’: user.cpp:56:32: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0; i<a[nod].size(); i++) ^ user.cpp: In function ‘void Salv()’: user.cpp:72:11: warning: unused variable ‘j’ [-Wunused-variable] int i,j,p,sol; ^ user.cpp:72:13: warning: unused variable ‘p’ [-Wunused-variable] int i,j,p,sol; ^ user.cpp:72:15: warning: unused variable ‘sol’ [-Wunused-variable] int i,j,p,sol; ^