Compilare: user.cpp: In function ‘int main()’: user.cpp:43:35: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i = 0; i < v.size(); i++) { ^ user.cpp:56:35: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(nr & val[lg[p2]]) ^ user.cpp:67:36: warning: array subscript has type ‘char’ [-Wchar-subscripts] a |= val[lg[p2]]; ^ user.cpp:15:30: warning: unused variable ‘j’ [-Wunused-variable] int i, t, x, y, conf, m, j; ^