Compilare: user.cpp: In function ‘double DI(int, int, std::vector<Punct>&, std::vector<Punct>&)’: user.cpp:62:31: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < z.size(); i++) ^ user.cpp:46:27: warning: unused variable ‘j’ [-Wunused-variable] int m = (st + dr)/2,i,j; ^ user.cpp: In function ‘int main()’: user.cpp:79:9: warning: unused variable ‘x’ [-Wunused-variable] int x,y,i; ^ user.cpp:79:11: warning: unused variable ‘y’ [-Wunused-variable] int x,y,i; ^