Compilare: user.cpp: In function ‘int main()’: user.cpp:21:15: warning: array subscript has type ‘char’ [-Wchar-subscripts] t[s[i]].push_back(i); ^ user.cpp:27:21: warning: array subscript has type ‘char’ [-Wchar-subscripts] m=t[s[i]].size(); ^ user.cpp:29:26: warning: array subscript has type ‘char’ [-Wchar-subscripts] s[t[ss[i]][j]]=q[i]; ^ user.cpp:32:50: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (s==q) { fout<<"DA\n"; for (i=0; i<v.size(); i++) fout<<v[i].first<<" "<<v[i].second<<endl; } else fout<<"NU"; ^