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Kernighans Algorithm

1. You are given a number n. 2. You have to count the number of set bits in the given number.

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Kernighans Algorithm

easy

1. You are given a number n. 2. You have to count the number of set bits in the given number.

Constraints

1 <= n <= 10^9

Format

Input

A number n

Output

Number of set bits in n

Example

Sample Input

58

Sample Output

4

Question Video

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