Compilare: main.cpp: In function 'int main()': main.cpp:31:20: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare] 31 | if (C.size()!=m+1) fout<<-1<<'\n'; | ~~~~~~~~^~~~~ main.cpp:33:24: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 33 | for (i=0; i<C.size()-1; i++) fout<<C[i]<<' '; | ~^~~~~~~~~~~