Compilare: user.cpp: In function ‘void ConstruiesteMatriceDistante(const punct&, const std::vector<std::vector<bool> >&, std::vector<std::vector<int> >&)’: user.cpp:23:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=1; i<dist.size(); ++i) ~^~~~~~~~~~~~ user.cpp: In function ‘int main()’: user.cpp:99:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=1;i<mat.size() && !ok;++i) ~^~~~~~~~~~~ user.cpp:100:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j=1;j<mat[i].size() && !ok;++j) ~^~~~~~~~~~~~~~ user.cpp:103:52: warning: ‘pct_min.punct::ord’ may be used uninitialized in this function [-Wmaybe-uninitialized] fout<<minim<<' '<<pct_min.abs<<' '<<pct_min.ord; ^ user.cpp:103:36: warning: ‘pct_min.punct::abs’ may be used uninitialized in this function [-Wmaybe-uninitialized] fout<<minim<<' '<<pct_min.abs<<' '<<pct_min.ord; ^~~