Live2d Test Env

SPOJ:Easy Factorials(占位)

Finding factorials are easy but they become large quickly that is why Lucky hate factorials. Today he have another task related to factorials.

For a given number n how many ways factorial n can expressed as a sum of two or more consecutive positive integers. Can you help lucky ?

Input

First line contains single integer T < 5001, next T lines followed by an integer N<10^8 and M<10^9.

where M is a prime number.

Output

Print the desired result mod M.

Example

Input:
1
3 7

Output:
1

Explanation:: 3! = 1+2+3 only one way.

Speed Adicts My best time for all cases is 1.57s. Best of Luck have fun:) .

题意:给定N,问N的阶乘可以表示为一段连续数字之和的方案数,答案模M。

思路:无。

 

posted @ 2018-05-17 10:04  nimphy  阅读(120)  评论(0编辑  收藏  举报