Problem3967--周周练-第13周：树-叶结点数量2

3967: 周周练-第13周：树-叶结点数量2

Time Limit: 1 Sec  Memory Limit: 128 MB
Submit: 49  Solved: 47
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Description

已知一棵完全二叉树的节点个数为n，求该完全二叉树度的叶结点数 
(2<=n<=1000000000) 

Sample Input Copy 

5

Sample Output Copy 

3

HINT

输入样例2
100
输出样例2
50

Source/Category

周周练-提高B 
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