Compilare: user.cpp: In function ‘void divide(long int, long int, long int, long int)’: user.cpp:16:13: warning: unused variable ‘l’ [-Wunused-variable] long i, l, k, l1, l2, j; ^ user.cpp:16:16: warning: unused variable ‘k’ [-Wunused-variable] long i, l, k, l1, l2, j; ^ user.cpp: In function ‘void solve()’: user.cpp:71:13: warning: unused variable ‘x2’ [-Wunused-variable] long i, x2, y2, ans1; ^ user.cpp:71:17: warning: unused variable ‘y2’ [-Wunused-variable] long i, x2, y2, ans1; ^