This problem requires you to run the python file and input the provided password
$ wget https://mercury.picoctf.net/static/5c4c0cbfbc149f3b0fc55c26f36ee707/ende.py
$ python ende.py -d flag.txt.en
Please enter the password: 192ee2db192ee2db192ee2db192ee2dbpicoCTF{4p0110_1n_7h3_h0us3_192ee2db}