Symmetric Matrix

输入描述:

The input consists of several test cases and is terminated by end-of-file.
Each test case contains two integers n and m.

输出描述:

For each test case, print an integer which denotes the result.

备注:

* 1 ≤ n ≤ 105
* 1 ≤ m ≤ 109
* The sum of n does not exceed 107.