Compilare: user.cpp: In function ‘void Solve()’: user.cpp:44:12: warning: unused variable ‘j’ [-Wunused-variable] int i, j, p1, p2, p3, d, x; ^ user.cpp:46:9: warning: unused variable ‘op1’ [-Wunused-variable] int op1, op2, op3; ^ user.cpp:46:14: warning: unused variable ‘op2’ [-Wunused-variable] int op1, op2, op3; ^ user.cpp:46:19: warning: unused variable ‘op3’ [-Wunused-variable] int op1, op2, op3; ^