Compilare: user.cpp: In function ‘int main()’: user.cpp:99:31: warning: integer overflow in expression [-Woverflow] Diag1[i][j] = Inf + 1; ^ user.cpp:108:31: warning: integer overflow in expression [-Woverflow] Diag2[i][j] = Inf + 1; ^ user.cpp: In member function ‘void InputReader::advance()’: user.cpp:34:41: 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 constructor ‘InputReader::InputReader(const char*)’: user.cpp:12:39: 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); ^