Graduates' Leaving

<p><span style="font-size: large;"><span style="font-family: Arial;">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; June is the month for leaving. Many graduates have to leave colleage and they need to pick up their own&nbsp; things.&nbsp; TT is one of the graduates. He has M same books and N same boxes. He needs to divide these books into K(0&lt;K&lt;=N) groups and put them into the boxes. What's more, the boxes are allowed to be empty and are able to set as many books as he wants. <br /> &nbsp;&nbsp;&nbsp;&nbsp;&nbsp; For example, now TT has 5 books and 3 boxes. (1,3,1),(1,1,3) and (3,1,1) are considered as the same division. &nbsp;<br /> &nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Can you calculate how many divisions TT has.<br /> </span></span></p>

<p><span style="font-size: large;"><span style="font-family: Arial;">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; The input files consists of several test cases. Each test case has two integers M and N.(0&lt;M&lt;=300, 0&lt;N&lt;=300)<br /> </span></span></p>

<p><span style="font-size: large;"><span style="font-family: Arial;">&nbsp;&nbsp;&nbsp;&nbsp; Output the answer for each test case in a single line.</span></span></p>