A915. Censoring Bronze--Bronze

Farmer John has purchased a subscription to Good Hooveskeeping magazine for
his cows, so they have plenty of material to read while waiting around in the
barn during milking sessions. Unfortunately, the latest issue contains a
rather inappropriate article on how to cook the perfect steak, which FJ would
rather his cows not see (clearly, the magazine is in need of better editorial
oversight).
FJ has taken all of the text from the magazine to create the string S of
length at most 10^6 characters. From this, he would like to remove occurrences
of a substring T of length <= 100 characters to censor the inappropriate
content. To do this, Farmer John finds the _first_ occurrence of T in S and
deletes it. He then repeats the process again, deleting the first occurrence
of T again, continuing until there are no more occurrences of T in S. Note
that the deletion of one occurrence might create a new occurrence of T that
didn't exist before.
Please help FJ determine the final contents of S after censoring is complete.

The first line will contain S. The second line will contain T. The length of T
will be at most that of S, and all characters of S and T will be lower-case
alphabet characters (in the range a..z).

The string S after all deletions are complete. It is guaranteed that S will
not become empty during the deletion process.