My lunchtime problem working with custom input but getting error otherwise

The link for my solution to problem SEDARR for this Lunchtime . I am getting correct output for the exact same input in custom but (NZEC Error on running ).

Traceback (most recent call last):
File “./prog.py”, line 2, in
EOFError: EOF when reading a line

I am not getting why the error is coming and was not able to correct that even after spending hours on it.

Before clicking on “Run”, provide some input under the “Custom Input” panel.