문제
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
Please help FJ determine the final contents of S after censoring is complete.
입력
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).
출력
The string S after all deletions are complete.
It is guaranteed that S will not become empty during the deletion process.
예제1
whatthemomooofun
moo
whatthefun