755

You are given an integer N. Among the integers between 1 and N (inclusive), how many Shichi-Go-San numbers (literally "Seven-Five-Three numbers") are there?

Here, a Shichi-Go-San number is a positive integer that satisfies the following condition:

• When the number is written in base ten, each of the digits 7, 5 and 3 appears at least once, and the other digits never appear.

Constraints

• 1 \leq N < 10^9
• N is an integer.

Input

Input is given from Standard Input in the following format:

N

Output

Print the number of the Shichi-Go-San numbers between 1 and N (inclusive).

Examples

Input

575

Output

4

Input

3600

Output

13

Input

999999999

Output

26484

inputFormat

Input

Input is given from Standard Input in the following format:

N

outputFormat

Output

Print the number of the Shichi-Go-San numbers between 1 and N (inclusive).

Examples

Input

575

Output

4

Input

3600

Output

13

Input

999999999

Output

26484

样例

575

4