Compilare: user.cpp: In member function ‘std::vector<int> Permut::Multiply(int, int)’: user.cpp:48:41: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 1; i < Rez.size(); ++i) { ^ user.cpp:49:39: warning: operation on ‘T’ may be undefined [-Wsequence-point] T = (T += Rez[i]) / 10; ^ user.cpp: In member function ‘void Permut::Add(std::vector<int>)’: user.cpp:61:53: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = A.size(); i <= Ans.size(); ++i) A.push_back(0); ^ user.cpp:63:53: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = Ans.size(); i <= A.size(); ++i) Ans.push_back(0); ^ user.cpp:65:41: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < Ans.size(); ++i) { ^