Time Limit : 1 Second
Memory Limit : 128 MB
Submission: 314
Solved: 61
Description
Consider the special sequence of numbers, which satisfies the following requirements:
a[0] = 0;
a[1] = 1;

for every i = 1, 2, 3, ...
a[2*i] = a[i];
a[2*i+1] = a[i] + a[i+1];

Your task is easy, write a program which for a given value of N (0 < N < 1018) finds the Nth number of the sequence.


Input
Only one number N.
Output
For every N in the input write the Nth number of the sequence.
sample input
0
1
2
sample output
0
1
1
hint
source
ACman
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