output.csv in case of multi detasts

[Saibo Geng]

Hello,

       Now we have several datasets X2.csv,X3.csv and X4.csv. We are wondering should our program produce one single combined  output.csv for all the 3 datasets or produce one output.csv per dataset. In the second case, our program may overwrite the output.csv for the previous dataset. 

      What will be the expected behavior?  

Thanks

[ACM SIGMOD Programming Contest 2021]

Hello!

The submitted solution must produce only one cumulative file "output.csv".

Best regards,

The organizers