Remove K Digits

medium

Given string num representing a non-negative integer num, and an integer k, print the smallest possible integer after removing k digits from num.

Input Format

A string num A number k

Output Format

A string representing smallest possible integer after removing k digits from num. Output should not contain any leading 0 except for the 0 itself.

Constraints

1: 1 &lt;= k &lt;= num.length &lt;= 10^5
2: num consists of only digits.
3: num does not have any leading zeros except for the zero itself.

Notice

Try First, Check Solution later

1. You should first read the question and watch the question video.
2. Think of a solution approach, then try and submit the question on editor tab.
3. We strongly advise you to watch the solution video for prescribed approach.

Example

Input

1432219
3

Output

132 Pattern

Asteroid Collision

Related Questions

medium Next Greater Element To The Right easy Next Greater Element I easy Next Greater Element Ii medium Validate Stack Sequences medium Design A Stack With Increment Operation medium Minimum Add To Make Parentheses Valid medium Score Of Parentheses medium Reverse Substrings Between Each Pair Of Parentheses medium Minimum Remove To Make Valid Parentheses medium Online Stock Span medium Exclusive Time Of Functions medium 132 Pattern medium Asteroid Collision medium Remove Duplicate Letters hard Largest Area Histogram 2 hard Maximal Rectangle