Compilare: user.cpp: In function ‘int main()’: user.cpp:78:46: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (unsigned i = 0; crtpoz < moves.size() && i < constr.size(); ++i) { ^ user.cpp:79:36: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while (crtpoz < moves.size() && moves[crtpoz].first.second < constr[i].first.second) ^ user.cpp:80:71: warning: operation on ‘crtpoz’ may be undefined [-Wsequence-point] update(moves[crtpoz].first.first, -moves[crtpoz++].second); ^