Problem Question

Time Limit:1 second(s)
Memory Limit:32 MB

Problem

In this problem you have add two numbers and subs track two number , if the results are positive integers  then you have to print “YES” otherwise “NO” .

Input

Input file starts with the test case T (1 >= T <= 100) . Each T lines follows two integers A , B (1 >= A,B <= 105)

Output

For every test case if the results are positive integers then print “YES” otherwise “NO” .



Sample Input Output

Input

2

2  3

6  4

Output

NO

YES