write a go solution for Description:
You are given a positive integer n. Output its binary notation.

Input Format:
The only line of input data contains an integer n (1 ≤ n ≤ 106).

Output Format:
Output the binary notation of n (without any leading zeros).

Note:
In the first example 5 = 1 * 22 + 0 * 21 + 1 * 20.. Output only the code with no comments, explanation, or additional text.