unset-ith-bit

Q4. Unset i-th bit

Problem Description

You are given two integers A and B. If B-th bit in A is set, make it unset If B-th bit in A is unset, leave it as it is Return the updated A value

Problem Constraints

1 <= A <= 109

0 <= B <= 30

Input Format

First argument A is an integer.

Second argument B is an integer.

Output Format

Return an integer.

Example Input

Input 1: A = 4 B = 1

Input 2: A = 5 B = 2

Example Output

Output 1: 4

Output 2: 1

Example Explanation

For Input 1: Given N = 4 which is 100 in binary. The 1-st bit is already unset

For Input 2: Given N = 5 which is 101 in binary. We unset the 2-nd bit