Problem3385--【Div3】abc400c-2^a b^2

3385: 【Div3】abc400c-2^a b^2

[Creator : ]
Time Limit : 1.000 sec  Memory Limit : 128 MB

SubmitSolved: 8Submit Num: 12Statistics

Description

Sample Input Copy 

20

Sample Output Copy 

5

HINT

样例解释：There are five good integers between 1 and 20: 2, 4, 8, 16, and 18.
Thus, print 5.

Source/Category

Div3 数学 atcoder 
Submit