Consecutive sum

Every body knew that 15 = 1+2+3+4+5 = 4+5+6 = 7+8. Now give you a number N, tell me how many ways to represent N as a sum of consecutive positive integers. For example, 15 have 3 ways to be found.

Each line will contain an signed 32-bits integer N. Process to end of file.

For each case, output the answer in one line.

15
1050

3
11

Wiskey

2008杭电集训队选拔赛——热身赛