Hardcoding values into Copy statement

Hello, I have a scenario where in I need to load table from flat file using COPY command The file has just one column the table has 5 columns first column needs to be loaded form the flat file and 3 column need to be hardoced( with some values) and last column is a sysdate(). Can anybody help me to achieve this. I wonder how copy statement can hardcode the value for specific columns.