Compilare: user.cpp: In function ‘int cauta_c(int, int)’: user.cpp:43:32: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<Hx[key].size();i++) ^ user.cpp: In function ‘int cauta_l(int, int)’: user.cpp:57:32: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<Hy[key].size();i++) ^ user.cpp: In function ‘int main()’: user.cpp:100:30: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j=0;j<V.size();j++) ^ user.cpp:106:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j=0;j<V.size();j++) ^