Compilare: user.cpp: In function ‘void DEI(int, int, long long int, const std::vector<Edge>&)’: user.cpp:120:35: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while (i < startingEdges.size() || j <= mid) ^ user.cpp:121:48: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (j > mid || (i < startingEdges.size() && startingEdges[i] <= updates[j])) ^ user.cpp: In constructor ‘InputReader::InputReader(const char*)’: user.cpp:15:47: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fread(buffer, SIZE, 1, input_file); ^ user.cpp: In member function ‘void InputReader::advance()’: user.cpp:37:51: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fread(buffer, SIZE, 1, input_file); ^