String Substring Removal

Background

[No specific background provided in original problem]

Problem Description

Given two strings, base and remove, return a version of the base string where all instances of the remove string have been removed (not case sensitive). You may assume that the remove string is length $1$ or more. Remove only non-overlapping instances, so with "xxx" removing "xx" leaves "x".

Input Format

The input consists of a single line containing two strings, base and remove, separated by a space.

base remove

Output Format

Output a single line containing the processed string, enclosed in double quotes ".

"processed_string"

Sample

Hello there llo

"He there"

Hello there e

"Hllo thr"

Hello there x

"Hello there"

Sample Explanation

Sample 1: Removing "llo" (case-insensitive) from "Hello there" results in "He there". Sample 2: Removing "e" (case-insensitive) from "Hello there" results in "Hllo thr". Sample 3: Removing "x" (case-insensitive) from "Hello there" results in "Hello there" as "x" is not found.

Constraints

Time limit: $1$ second, Memory limit: $1024$ KiB for each test case.