Compilare: user.cpp: In function ‘void Read()’: user.cpp:11:9: warning: unused variable ‘j’ [-Wunused-variable] { int i,j,x,y,r,t,d; ^ user.cpp: In function ‘void Solve()’: user.cpp:34:11: warning: unused variable ‘x’ [-Wunused-variable] { int i,j,x,y,step=1,ven,pmax=0,l,l2; ^ user.cpp:34:13: warning: unused variable ‘y’ [-Wunused-variable] { int i,j,x,y,step=1,ven,pmax=0,l,l2; ^ user.cpp:34:22: warning: unused variable ‘ven’ [-Wunused-variable] { int i,j,x,y,step=1,ven,pmax=0,l,l2; ^ user.cpp:34:26: warning: unused variable ‘pmax’ [-Wunused-variable] { int i,j,x,y,step=1,ven,pmax=0,l,l2; ^