Compilare: user.cpp: In constructor ‘InputReader::InputReader(const char*)’: user.cpp:15:43: 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:37:47: 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 function ‘int getMostDistant(int*)’: user.cpp:78:12: warning: ‘who’ may be used uninitialized in this function [-Wmaybe-uninitialized] return who; ^ user.cpp: In function ‘int main()’: user.cpp:115:24: warning: ‘who’ may be used uninitialized in this function [-Wmaybe-uninitialized] dfs(diamB, fatherB); ^ user.cpp:114:24: warning: ‘who’ may be used uninitialized in this function [-Wmaybe-uninitialized] dfs(diamA, fatherA); ^