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Hunan Normal University
College of Information Science and Engineering
结业考试
Time Limit: 1000ms, Special Time Limit:2500ms, Memory Limit:65536KB
Total submit users: 52, Accepted users: 42
Problem 11600 : No special judgement
Problem description
  阿才的培训班要结业了,来一场结业考试。给定2个32位整数,问较小的数需要加加多少次才能变成较大的数。例如给定3和5,则答案是2。什么?你说你不会加加,重新交学费再学一遍!
如果你觉得结业考试太简单,那是当然的,太难了都不能结业以后谁还来上培训班;如果你觉得这道题很难,这也是显然的,不难一点怎么体现出培训班的成功哪。

Input
  输入有多行,每行2个32位整数。2个负数则代表输入结束,且该行不用处理。

Output
  每个输入输出一行,答案。

Sample Input
3 5
4 6
-1 -1
Sample Output
2
2
Problem Source
  HUNNU Contest 

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