Compilare: main.cpp: In function 'int main()': main.cpp:24:22: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare] 24 | if (C.size()!=m+1) fout << -1; | ~~~~~~~~^~~~~ main.cpp:26:24: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 26 | for (i=0; i<C.size()-1; i++) fout << C[i] << ' '; | ~^~~~~~~~~~~