118 - ZOJ Monthly, July 2012 - H
Alice is exploring the wonderland, suddenly she fell into a hole, when she woke up, she found there are b - a + 1 treasures labled a from b in front of her.
The input contains multiple cases, each case contains two integers a and b (0 <= a <= b <= 263-1) seperated by a single space. Proceed to the end of file.
Output the total number of real treasure.
0 2 0 10
Author: QU, Zhe