Heading ##There are two integers A and B. You are required to compute the bitwise AND amongst all natural numbers lying between A and B, both inclusive.

Input Format

First line of the input contains T, the number of testcases to follow. Each testcase in a newline contains A and B separated by a single space.

Constraints

1≤T≤200

0≤A≤B<232

Output Format

Output one line per test case with the required bitwise AND.