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Contest: Task: Related: TaskB TaskD

Score : $300$ points

Problem Statement

Among the positive integers that consist of $0$ 's and $2$ 's when written in base $10$ , find the $K$ -th smallest integer.

Constraints

$K$ is an integer between $1$ and $10^{18}$ (inclusive).

Input

Input is given from Standard Input in the following format:

$K$

Output

Print the answer as an integer.
Here, the exact value must be printed as an integer, even if it is big. Exponential notations such as 2.34e+22, for example, or unnecessary leading zeros such as 0523 are not allowed.

Sample Input 1

Sample Output 1

The positive integers that consist of $0$ 's and $2$ 's when written in base $10$ are $2,20,22,\dots$ in ascending order.
The $(K=)$ $3$ -rd of them, which is $22$ , should be printed.

Sample Input 2

Sample Output 2

Sample Input 3

923423423420220108

Sample Output 3

220022020000202020002022022000002020002222002200002022002200

Note that the exact value of the answer must be printed as an integer, even if it is big.