Compilare: user.cpp: In function ‘int main()’: user.cpp:74:14: warning: unused variable ‘sx’ [-Wunused-variable] int diff , sx , x; ^ user.cpp:74:19: warning: unused variable ‘x’ [-Wunused-variable] int diff , sx , x; ^ user.cpp:59:10: warning: unused variable ‘j’ [-Wunused-variable] int i , j , x, left , right , Sol; ^ user.cpp:59:32: warning: unused variable ‘Sol’ [-Wunused-variable] int i , j , x, left , right , Sol; ^