Compilare: user.cpp: In function ‘void solve()’: user.cpp:22:9: warning: unused variable ‘pos1’ [-Wunused-variable] int pos1 = 0, pos2 = 0, posans = 0; ^~~~ user.cpp:22:19: warning: unused variable ‘pos2’ [-Wunused-variable] int pos1 = 0, pos2 = 0, posans = 0; ^~~~ user.cpp:22:29: warning: unused variable ‘posans’ [-Wunused-variable] int pos1 = 0, pos2 = 0, posans = 0; ^~~~~~