题目是这样的：
Description
Each natural number is the sum of some powers of two. For example: 37=2^5+2^2+2^0. Now, we say a^b can be indicated like this: a(b), so 37=2(5)+2(3)+2(0). 5=2(2)+2(0), 3=2+2(0), so in the end 37=2(2(2)+2(0))+2(2)+2(0). We call this 0-2 Indicating Method.
Input
Each line contains only a number N(N