Problem Description
Give you two numbers A and B, if A is equal to B, you should print "YES", or print "NO".
 

Input
each test case contains two numbers A and B.

 

Output
for each case, if A is equal to B, you should print "YES", or print "NO".
 

Sample Input
1 2
2 2
3 3
4 3
 

Sample Output
NO
YES
YES
NO

要不你编一下看看，我交上去看看它会不会说超出输出限制