Compilare: user.cpp: In function ‘std::vector<long long int> kadane(std::vector<long long int>, int)’: user.cpp:15:29: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < v.size(); ++i) { ^ user.cpp: In function ‘int main()’: user.cpp:71:31: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (auto i = 0; i < vn.size(); ++i) { ^ user.cpp:74:31: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (auto i = 0; i < vm.size(); ++i) { ^ user.cpp:47:29: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(in, "%d %d", &N, &M); ^ user.cpp:52:27: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(in, "%lld", &eln); ^ user.cpp:57:27: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(in, "%lld", &elm); ^