Compilare: user.cpp: In function ‘int main()’: user.cpp:72:33: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i=0;i<ans.size();i++){ ^ user.cpp:51:11: warning: unused variable ‘max’ [-Wunused-variable] ll x, max=0,mk=1; ^ user.cpp:51:17: warning: unused variable ‘mk’ [-Wunused-variable] ll x, max=0,mk=1; ^ user.cpp:55:9: warning: unused variable ‘d’ [-Wunused-variable] int d; ^