Problem:


Score : 100 points

Problem Statement

Decades have passed since the beginning of AtCoder Beginner Contest.

The contests are labeled as ABC001, ABC002, ... from the first round, but after the 999-th round ABC999, a problem occurred: how the future rounds should be labeled?

In the end, the labels for the rounds from the 1000-th to the 1998-th are decided: ABD001, ABD002, ..., ABD999.

You are given an integer N between 1 and 1998 (inclusive). Print the first three characters of the label of the N-th round of AtCoder Beginner Contest.

Constraints

1 \leq N \leq 1998

N is an integer.

Input

Input is given from Standard Input in the following format:

N

Output

Print the first three characters of the label of the N-th round of AtCoder Beginner Contest.

Sample Input 1

999

Sample Output 1

ABC

The 999-th round of AtCoder Beginner Contest is labeled as ABC999.

Sample Input 2

1000

Sample Output 2

ABD

The 1000-th round of AtCoder Beginner Contest is labeled as ABD001.

Sample Input 3

1481

Sample Output 3

ABD

The 1481-th round of AtCoder Beginner Contest is labeled as ABD482.



Sample input:
999


Sample output:
ABC

Submission status: Wrong Answer

Solution code:
N = int(input())
num = [0, 1, 2, 3, 4, 5, 1, 2, 3, 1, 2, 3, 2, 3, 4, 2, 3, 4, 2, 3, 4, 5, 6, 7, 3, 4, 5, 3, 4, 5, 5, 6, 7, 4, 5, 6, 1, 2, 3, 4, 5, 6, 2, 3, 4, 2, 3, 4, 3, 4, 5, 3, 4, 5, 3, 4, 5, 6, 7, 8, 4, 5, 6, 4, 5, 6, 6, 7, 8, 5, 6, 7, 2, 3, 4, 5, 6, 7, 3, 4, 5, 3, 2, 3, 4, 5, 6, 2, 3, 4, 2, 3, 4, 3, 4, 5, 3, 4, 5, 3, 4, 5, 6, 7, 8, 4, 5, 6, 3, 4, 5, 6, 7, 8, 4, 5, 6, 2, 3, 4, 5, 6, 7, 3, 4, 5, 3, 4, 5, 4, 5, 6, 4, 5, 6, 4, 5, 6, 7, 8, 9, 5, 6, 7, 4, 5, 6, 7, 8, 9, 5, 6, 7, 3, 4, 5, 6, 7, 8, 4, 5, 6, 4, 3, 4, 5, 6, 7, 3, 4, 5, 3, 4, 5, 4, 5, 6, 4, 5, 6, 4, 5, 6, 7, 8, 9, 5, 6, 7, 4, 5, 6, 7, 8, 9, 5, 6, 7, 3, 4, 5, 6, 7, 8, 4, 5, 6, 4, 5, 6, 5, 6, 7, 5, 6, 7, 5, 2, 3, 4, 5, 6, 2, 3, 4, 2, 3, 4, 3, 4, 5, 3, 4, 5, 3, 4, 5, 6, 7, 8, 4, 5, 6, 4, 4, 5, 6, 7, 8, 4, 5, 6, 2, 3, 4, 5, 6, 7, 3, 4, 5, 3, 4, 5, 4, 5, 6, 4, 5, 6, 4, 5, 6, 7, 8, 9, 5, 6, 7, 4, 5, 6, 7, 8, 9, 5, 6, 7, 3, 4, 5, 6, 7, 8, 4, 5, 6, 4, 3, 4, 5, 6, 7, 3, 4, 5, 3, 4, 5, 4, 5, 6, 4, 5, 6, 4, 5, 6, 7, 8, 9, 5, 6, 7, 4, 5, 6, 7, 8, 9, 5, 6, 7, 3, 4, 5, 6, 7, 8, 4, 5, 6, 4, 5, 6, 5, 6, 7, 5, 6, 7, 5, 6, 7, 8, 9, 10, 6, 7, 8, 5, 6, 7, 8, 9, 10, 6, 7, 8, 4, 5, 6, 7, 8, 9, 5, 6, 7, 5, 4, 5, 6, 7, 8, 4, 5, 6, 4, 5, 6, 5, 6, 7, 5, 6, 7, 5, 6, 7, 8, 9, 10, 6, 7, 8, 5, 6, 7, 8, 9, 10, 6, 7, 8, 4, 5, 6, 7, 8, 9, 5, 6, 7, 5, 6, 7, 6, 7, 8, 6, 7, 8, 6, 3, 4, 5, 6, 7, 3, 4, 5, 3, 4, 5, 4, 5, 6, 4, 5, 6, 4, 5, 6, 7, 8, 9, 5, 6, 7, 5, 5, 6, 7, 8, 9, 5, 6, 7, 3, 4, 5, 6, 7, 8, 4, 5, 6, 4, 5, 6, 5, 6, 7, 5, 6, 7, 5, 6, 7, 8, 9, 10, 6, 7, 8, 5, 6, 7, 8, 9, 10, 6, 7, 8, 4, 5, 6, 7, 8, 9, 5, 6, 7, 5, 4, 5, 6, 7, 8, 4, 5, 6, 4, 5, 6, 5, 6, 7, 5, 6, 7, 5, 6, 7, 8, 9, 10, 6, 7, 8, 5, 6, 7, 8, 9, 10, 6, 7, 8, 4, 5, 6, 7, 8, 9, 5, 6, 7, 5, 6, 7, 6, 7, 8, 6, 7, 8, 6, 7, 8, 9, 10, 11, 7, 8, 9, 6, 7, 8, 9, 10, 11, 7, 8, 9, 5, 6, 7, 8, 9, 10, 6, 7, 8, 6, 5, 6, 7, 8, 9, 5, 6, 7, 5, 6, 7, 6, 7, 8, 6, 7, 8, 6, 7, 8, 9, 10, 11, 7, 8, 9, 6, 7, 8, 9, 10, 11, 7, 8, 9, 5, 6, 7, 8, 9, 10, 6, 7, 8, 6, 7, 8, 7, 8, 9, 7, 8, 9, 7, 4, 5, 6, 7, 8, 4, 5, 6, 4, 5, 6, 5, 6, 7, 5, 6, 7, 5, 6, 7, 8, 9, 10, 6, 7, 8, 6, 6, 7, 8, 9, 10, 6, 7, 8, 4, 5, 6, 7, 8, 9, 5, 6, 7, 5, 6, 7, 6, 7, 8, 6, 7, 8, 6, 7, 8, 9, 10, 11, 7, 8, 9, 6, 7, 8, 9, 10, 11, 7, 8, 9, 5, 6, 7, 8, 9, 10, 6, 7, 8, 6, 2, 3, 4, 5, 6, 2, 3, 4, 2, 3, 4, 3, 4, 5, 3, 4, 5, 3, 4, 5, 6, 7, 8, 4, 5, 6, 4, 5, 6, 6, 7, 8, 5, 6, 7, 2, 3, 4, 5, 6, 7, 3, 4, 5, 3, 4, 5, 4, 5, 6, 4, 5, 6, 4, 5, 6, 7, 8, 9, 5, 6, 7, 5, 6, 7, 7, 8, 9, 6, 7, 8, 3, 4, 5, 6, 7, 8, 4, 5, 6, 4, 3, 4, 5, 6, 7, 3, 4, 5, 3, 4, 5, 4, 5, 6, 4, 5, 6, 4, 5, 6, 7, 8, 9, 5, 6, 7, 4, 5, 6, 7, 8, 9, 5, 6, 7, 3, 4, 5, 6, 7, 8, 4, 5, 6, 4, 5, 6, 5, 6, 7, 5, 6, 7, 5, 5, 6, 7, 8, 9, 5, 6, 7, 5, 6, 7, 6, 7, 8, 6, 7, 8, 4, 5, 6, 7, 8, 9, 5, 6, 7, 5, 4, 5, 6, 7, 8, 4, 5, 6, 4, 5, 6, 5, 6, 7, 5, 6, 7, 5, 6, 7, 7, 8, 9, 6, 7, 8, 5, 6, 7, 8, 9, 10, 6, 7, 8, 4, 5, 6, 7, 8, 9, 5, 6, 7, 5, 6, 7, 6, 7, 8, 6, 7, 8, 6, 3, 4, 5, 6, 7, 3, 4, 5, 3, 4, 5, 4, 5, 6, 4, 5, 6, 4, 5, 6, 7, 8, 9, 5, 6, 7, 5, 5, 6, 7, 8, 9, 5, 6, 7, 3, 4, 5, 6, 7, 8, 4, 5, 6, 4, 5, 6, 5, 6, 7, 5, 6, 7, 5, 6, 7, 8, 9, 10, 6, 7, 8, 5, 6, 7, 8, 9, 10, 6, 7, 8, 4, 5, 6, 7, 8, 9, 5, 6, 7, 5, 4, 5, 6, 7, 8, 4, 5, 6, 4, 5, 6, 5, 6, 7, 5, 6, 7, 5, 6, 7, 8, 9, 10, 6, 7, 8, 5, 6, 7, 8, 9, 10, 6, 7, 8, 4, 5, 6, 7, 8, 9, 5, 6, 7, 5, 6, 7, 6, 7, 8, 6, 7, 8, 6, 6, 7, 8, 9, 10, 6, 7, 8, 6, 7, 8, 7, 8, 9, 7, 8, 9, 5, 6, 7, 8, 9, 10, 6, 7, 8, 6, 5, 6, 7, 8, 9, 5, 6, 7, 5, 6, 7, 6, 7, 8, 6, 7, 8, 6, 7, 8, 8, 9, 10, 7, 8, 9, 6, 7, 8, 9, 10, 11, 7, 8, 9, 5, 6, 7, 8, 9, 10, 6, 7, 8, 6, 7, 8, 7, 8, 9, 7, 8, 9, 7, 4, 5, 6, 7, 8, 4, 5, 6, 4, 5, 6, 5, 6, 7, 5, 6, 7, 5, 6, 7, 8, 9, 10, 6, 7, 8, 6, 6, 7, 8, 9, 10, 6, 7, 8, 4, 5, 6, 7, 8, 9, 5, 6, 7, 5, 6, 7, 6, 7, 8, 6, 7, 8, 6, 7, 8, 9, 10, 11, 7, 8, 9, 6, 7, 8, 9, 10, 11, 7, 8, 9, 5, 6, 7, 8, 9, 10, 6, 7, 8, 6, 5, 6, 7, 8, 9, 5, 6, 7, 5, 6, 7, 6, 7, 8, 6, 7, 8, 6, 7, 8, 9, 10, 11, 7, 8, 9, 6, 7, 8, 9, 10, 11, 7, 8, 9, 5, 6, 7, 8, 9, 10, 6, 7, 8, 6, 7, 8, 7, 8, 9, 7, 8, 9, 7, 2, 3, 4, 5, 6, 2, 3, 4, 2, 3, 4, 3, 4, 5, 3, 4, 5, 3, 4, 5, 6, 7, 8, 4, 5, 6, 4, 5, 6, 6, 7, 8, 5, 6, 7, 2, 3, 4, 5, 6, 7, 3, 4, 5, 3, 4, 5, 4, 5, 6, 4, 5, 6, 4, 5, 6, 7, 8, 9, 5, 6, 7, 5, 6, 7, 7, 8, 9, 6, 7, 8, 3, 4, 5, 6, 7, 8, 4, 5, 6, 4, 3, 4, 5, 6, 7, 3, 4, 5, 3, 4, 5, 4, 5, 6, 4, 5, 6, 4, 5, 6, 7, 8, 9, 5, 6, 7, 4, 5, 6, 7, 8, 9, 5, 6, 7, 3, 4, 5, 6, 7, 8, 4, 5, 6, 4, 5, 6, 5, 6, 7, 5, 6, 7, 5, 6, 7, 8, 9, 10, 6, 7, 8, 5, 6, 7, 8, 9, 10, 6, 7, 8, 4, 5, 6, 7, 8, 9, 5, 6, 7, 5, 3, 4, 5, 6, 7, 3, 4, 5, 3, 4, 5, 4, 5, 6, 4, 5, 6, 4, 5, 6, 7, 8, 9, 5, 6, 7, 5, 6, 7, 7, 8, 9, 6, 7, 8, 3, 4, 5, 6, 7, 8, 4, 5, 6, 4, 5, 6, 5, 6, 7, 5, 6, 7, 5, 3, 4, 5, 6, 7, 3, 4, 5, 3, 4, 5, 4, 5, 6, 4, 5, 6, 4, 5, 6, 7, 8, 9, 5, 6, 7, 5, 4, 5, 6, 7, 8, 4, 5, 6, 3, 4, 5, 5, 6, 7, 4, 5, 6, 4, 5, 6, 5, 6, 7, 5, 6, 7, 5, 6, 7, 8, 9, 10, 6, 7, 8, 4, 5, 6, 7, 8, 9, 5, 6, 7, 4, 5, 6, 6, 7, 8, 5, 6, 7, 5, 4, 5, 6, 7, 8, 4, 5, 6, 4, 5, 6, 5, 6, 7, 5, 6, 7, 5, 6, 7, 8, 9, 10, 6, 7, 8, 5, 5, 6, 7, 8, 9, 5, 6, 7, 4, 5, 6, 6, 7, 8, 5, 6, 7, 5, 6, 7, 6, 7, 8, 6, 7, 8, 6, 7, 8, 9, 10, 11, 7, 8, 9, 5, 6, 7, 8, 9, 10, 6, 7, 8, 5, 6, 7, 7, 8, 9, 6, 7, 8, 6, 4, 5, 6, 7, 8, 4, 5, 6, 4, 5, 6, 5, 6, 7, 5, 6, 7, 5, 6, 7, 8, 9, 10, 6, 7, 8, 6, 6, 7, 8, 9, 10, 6, 7, 8, 4, 5, 6, 7, 8, 9, 5, 6, 7, 5, 6, 7, 6, 7, 8, 6, 7, 8, 6, 4, 5, 6, 7, 8, 4, 5, 6, 4, 5, 6, 5, 6, 7, 5, 6, 7, 5, 6, 7, 8, 9, 10, 6, 7, 8, 6, 5, 6, 7, 8, 9, 5, 6, 7, 4, 5, 6, 6, 7, 8, 5, 6, 7, 5, 6, 7, 6, 7, 8, 6, 7, 8, 6, 7, 8, 9, 10, 11, 7, 8, 9, 5, 6, 7, 8, 9, 10, 6, 7, 8, 5, 6, 7, 7, 8, 9, 6, 7, 8, 6, 5, 6, 7, 8, 9, 5, 6, 7, 5, 6, 7, 6, 7, 8, 6, 7, 8, 6, 7, 8, 9, 10, 11, 7, 8, 9, 6, 6, 7, 8, 9, 10, 6, 7, 8, 5, 6, 7, 7, 8, 9, 6, 7, 8, 6, 7, 8, 7, 8, 9, 7, 8, 9, 7, 8, 9, 10, 11, 12, 8, 9, 10, 6, 7, 8, 9, 10, 11, 7, 8, 9, 6, 7, 8, 8, 9, 10, 7, 8, 9, 7, 5, 6, 7, 8, 9, 5, 6, 7, 5, 6, 7, 6, 7, 8, 6, 7, 8, 6, 7, 8, 9, 10, 11, 7, 8, 9, 7, 7, 8, 9, 10, 11, 7, 8, 9, 5, 6, 7, 8, 9, 10, 6, 7, 8, 6, 7, 8, 7, 8, 9, 7, 8, 9, 7, 5, 6, 7, 8, 9, 5, 6, 7, 5, 6, 7, 6, 7, 8, 6, 7, 8, 6, 7, 8, 9, 10, 11, 7, 8, 9, 7, 6, 7, 8, 9, 10, 6, 7, 8, 5, 6, 7, 7, 8, 9, 6, 7, 8, 6, 7, 8, 7, 8, 9, 7, 8, 9, 7, 8, 9, 10, 11, 12, 8, 9, 10, 6, 7, 8, 9, 10, 11, 7, 8, 9, 6, 7, 8, 8, 9, 10, 7, 8, 9, 7, 3, 4, 5, 6, 7, 3, 4, 5, 3, 4, 5, 4, 5, 6, 4, 5, 6, 4, 5, 6, 7, 8, 9, 5, 6, 7, 5, 6, 7, 7, 8, 9, 6, 7, 8, 3, 4, 5, 6, 7, 8, 4, 5, 6, 4, 5, 6, 5, 6, 7, 5, 6, 7, 5, 6, 7, 8, 9, 10, 6, 7, 8, 6, 7, 8, 8, 9, 10, 7, 8, 9, 4, 5, 6, 7, 8, 9, 5, 6, 7, 5, 4, 5, 6, 7, 8, 4, 5, 6, 4, 5, 6, 5, 6, 7, 5, 6, 7, 5, 6, 7, 8, 9, 10, 6, 7, 8, 5, 6, 7, 8, 9, 10, 6, 7, 8, 4, 5, 6, 7, 8, 9, 5, 6, 7, 5, 6, 7, 6, 7, 8, 6, 7, 8, 6, 6, 7, 8, 9, 10, 6, 7, 8, 6, 7, 8, 7, 8, 9, 7, 8, 9, 5, 6, 7, 8, 9, 10, 6, 7, 8, 6, 4, 5, 6, 7, 8, 4, 5, 6, 4, 5, 6, 5, 6, 7, 5, 6, 7, 5, 6, 7, 8, 9, 10, 6, 7, 8, 6, 7, 8, 8, 9, 10, 7, 8, 9, 4, 5, 6, 7, 8, 9, 5, 6, 7, 5, 6, 7, 6, 7, 8, 6, 7, 8, 6, 4, 5, 6, 7, 8, 4, 5, 6, 4, 5, 6, 5, 6, 7, 5, 6, 7, 5, 6, 7, 8, 9, 10, 6, 7, 8, 6, 5, 6, 7, 8, 9, 5, 6, 7, 4, 5, 6, 6, 7, 8, 5, 6, 7, 5, 6, 7, 6, 7, 8, 6, 7, 8, 6, 7, 8, 9, 10, 11, 7, 8, 9, 5, 6, 7, 8, 9, 10, 6, 7, 8, 5, 6, 7, 7, 8, 9, 6, 7, 8, 6, 5, 6, 7, 8, 9, 5, 6, 7, 5, 6, 7, 6, 7, 8, 6, 7, 8, 6, 7, 8, 9, 10, 11, 7, 8, 9, 6, 6, 7, 8, 9, 10, 6, 7, 8, 5, 6, 7, 7, 8, 9, 6, 7, 8, 6, 7, 8, 7, 8, 9, 7, 8, 9, 7, 7, 8, 9, 10, 11, 7, 8, 9, 6, 7, 8, 8, 9, 10, 7, 8, 9, 6, 7, 8, 8, 9, 10, 7, 8, 9, 7, 5, 6, 7, 8, 9, 5, 6, 7, 5, 6, 7, 6, 7, 8, 6, 7, 8, 6, 7, 8, 9, 10, 11, 7, 8, 9, 7, 7, 8, 9, 10, 11, 7, 8, 9, 5, 6, 7, 8, 9, 10, 6, 7, 8, 6, 7, 8, 7, 8, 9, 7, 8, 9, 7, 5, 6, 7, 8, 9, 5, 6, 7, 5, 6, 7, 6, 7, 8, 6, 7, 8, 6, 7, 8, 9, 10, 11, 7, 8, 9, 7, 6, 7, 8, 9, 10, 6, 7, 8, 5, 6, 7, 7, 8, 9, 6, 7, 8, 6, 7, 8, 7, 8, 9, 7, 8, 9, 7, 8, 9, 10, 11, 12, 8, 9, 10, 6, 7, 8, 9, 10, 11, 7, 8, 9, 6, 7, 8, 8, 9, 10, 7, 8, 9, 7, 6, 7, 8, 9, 10, 6, 7, 8, 6, 7, 8, 7, 8, 9, 7, 8, 9, 7, 8, 9, 10, 11, 12, 8, 9, 10, 7, 7, 8, 9, 10, 11, 7, 8, 9, 6, 7, 8, 8, 9, 10, 7, 8, 9, 7, 8, 9, 8, 9, 10, 8, 9, 10, 8, 3, 4, 5, 6, 7, 3, 4, 5, 3, 4, 5, 4, 5, 6, 4, 5, 6, 4, 5, 6, 7, 8, 9, 5, 6, 7, 5, 6, 7, 7, 8, 9, 6, 7, 8, 3, 4, 5, 6, 7, 8, 4, 5, 6, 4, 5, 6, 5, 6, 7, 5, 6, 7, 5, 6, 7, 8, 9, 10, 6, 7, 8, 6, 7, 8, 8, 9, 10, 7, 8, 9, 4, 5, 6, 7, 8, 9, 5, 6, 7, 5, 4, 5, 6, 7, 8, 4, 5, 6, 4, 5, 6, 5, 6, 7, 5, 6, 7, 5, 6, 7, 8, 9, 10, 6, 7, 8, 5, 6, 7, 8, 9, 10, 6, 7, 8, 4, 5, 6, 7, 8, 9, 5, 6, 7, 5, 6, 7, 6, 7, 8, 6, 7, 8, 6, 7, 8, 9, 10, 11, 7, 8, 9, 6, 7, 8, 9, 10, 11, 7, 8, 9, 5, 6, 7, 8, 9, 10, 6, 7, 8, 6, 4, 5, 6, 7, 8, 4, 5, 6, 4, 5, 6, 5, 6, 7, 5, 6, 7, 5, 6, 7, 8, 9, 10, 6, 7, 8, 6, 7, 8, 8, 9, 10, 7, 8, 9, 4, 5, 6, 7, 8, 9, 5, 6, 7, 5, 6, 7, 6, 7, 8, 6, 7, 8, 6, 4, 5, 6, 7, 8, 4, 5, 6, 4, 5, 6, 5, 6, 7, 5, 6, 7, 5, 6, 7, 8, 9, 10, 6, 7, 8, 6, 5, 6, 7, 8, 9, 5, 6, 7, 4, 5, 6, 6, 7, 8, 5, 6, 7, 5, 6, 7, 6, 7, 8, 6, 7, 8, 6, 7, 8, 9, 10, 11, 7, 8, 9, 5, 6, 7, 8, 9, 10, 6, 7, 8, 5, 6, 7, 7, 8, 9, 6, 7, 8, 6, 5, 6, 7, 8, 9, 5, 6, 7, 5, 6, 7, 6, 7, 8, 6, 7, 8, 6, 7, 8, 9, 10, 11, 7, 8, 9, 6, 5, 6, 7, 8, 9, 5, 6, 7, 5, 6, 7, 6, 7, 8, 6, 7, 8, 6, 7, 8, 7, 8, 9, 7, 8, 9, 7, 8, 9, 9, 10, 11, 8, 9, 10, 5, 6, 7, 8, 9, 10, 6, 7, 8, 6, 7, 8, 7, 8, 9, 7, 8, 9, 7, 5, 6, 7, 8, 9, 5, 6, 7, 5, 6, 7, 6, 7, 8, 6, 7, 8, 6, 7, 8, 9, 10, 11, 7, 8, 9, 7, 6, 7, 8, 9, 10, 6, 7, 8, 5, 6, 7, 7, 8, 9, 6, 7, 8, 6, 7, 8, 7, 8, 9, 7, 8, 9, 7, 5, 6, 7, 8, 9, 5, 6, 7, 5, 6, 7, 6, 7, 8, 6, 7, 8, 6, 7, 8, 8, 9, 10, 7, 8, 9, 7, 6, 7, 8, 9, 10, 6, 7, 8, 5, 6, 7, 7, 8, 9, 6, 7, 8, 6, 7, 8, 7, 8, 9, 7, 8, 9, 7, 7, 8, 9, 10, 11, 7, 8, 9, 6, 7, 8, 8, 9, 10, 7, 8, 9, 6, 7, 8, 8, 9, 10, 7, 8, 9, 7, 6, 7, 8, 9, 10, 6, 7, 8, 6, 7, 8, 7, 8, 9, 7, 8, 9, 7, 8, 9, 9, 10, 11, 8, 9, 10, 7, 6, 7, 8, 9, 10, 6, 7, 8, 6, 7, 8, 7, 8, 9, 7, 8, 9, 7, 8, 9, 8, 9, 10, 8, 9, 10, 8, 8, 9, 10, 11, 12, 8, 9, 10, 6, 7, 8, 9, 10, 11, 7, 8, 9, 7, 8, 9, 8, 9, 10, 8, 9, 10, 8, 6, 7, 8, 9, 10, 6, 7, 8, 6, 7, 8, 7, 8, 9, 7, 8, 9, 7, 8, 9, 10, 11, 12, 8, 9, 10, 8, 7, 8, 9, 10, 11, 7, 8, 9, 6, 7, 8, 8, 9, 10, 7, 8, 9, 7, 8, 9, 8, 9, 10, 8, 9, 10, 8, 6, 7, 8, 9, 10, 6, 7, 8, 6, 7, 8, 7, 8, 9, 7, 8, 9, 7, 8, 9, 9, 10, 11, 8, 9, 10, 8, 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12, 13, 10, 11, 12, 12, 13, 14, 11, 12, 13, 11, 7, 8, 9, 10, 11, 7, 8, 9, 7, 8, 9, 8, 9, 10, 8, 9, 10, 8, 9, 10, 11, 12, 13, 9, 10, 11, 9, 10, 11, 11, 12, 13, 10, 11, 12, 7, 8, 9, 10, 11, 12, 8, 9, 10, 8, 9, 10, 9, 10, 11, 9, 10, 11, 9, 10, 11, 12, 13, 14, 10, 11, 12, 10, 11, 12, 12, 13, 14, 11, 12, 13, 8, 9, 10, 11, 12, 13, 9, 10, 11, 9, 8, 9, 10, 11, 12, 8, 9, 10, 8, 9, 10, 9, 10, 11, 9, 10, 11, 9, 10, 11, 12, 13, 14, 10, 11, 12, 9, 10, 11, 12, 13, 14, 10, 11, 12, 8, 9, 10, 11, 12, 13, 9, 10, 11, 9, 10, 11, 10, 11, 12, 10, 11, 12, 10, 10, 11, 12, 13, 14, 10, 11, 12, 10, 11, 12, 11, 12, 13, 11, 12, 13, 9, 10, 11, 12, 13, 14, 10, 11, 12, 10, 8, 9, 10, 11, 12, 8, 9, 10, 8, 9, 10, 9, 10, 11, 9, 10, 11, 9, 10, 11, 12, 13, 14, 10, 11, 12, 10, 11, 12, 12, 13, 14, 11, 12, 13, 8, 9, 10, 11, 12, 13, 9, 10, 11, 9, 10, 11, 10, 11, 12, 10, 11, 12, 10, 8, 9, 10, 11, 12, 8, 9, 10, 8, 9, 10, 9, 10, 11, 9, 10, 11, 9, 10, 11, 12, 13, 14, 10, 11, 12, 10, 9, 10, 11, 12, 13, 9, 10, 11, 8, 9, 10, 10, 11, 12, 9, 10, 11, 9, 10, 11, 10, 11, 12, 10, 11, 12, 10, 11, 12, 13, 14, 15, 11, 12, 13, 9, 10, 11, 12, 13, 14, 10, 11, 12, 9, 10, 11, 11, 12, 13, 10, 11, 12, 10, 9, 10, 11, 12, 13, 9, 10, 11, 9, 10, 11, 10, 11, 12, 10, 11, 12, 10, 11, 12, 13, 14, 15, 11, 12, 13, 10, 9, 10, 11, 12, 13, 9, 10, 11, 9, 10, 11, 10, 11, 12, 10, 11, 12, 10, 11, 12, 11, 12, 13, 11, 12, 13, 11, 11, 12, 13, 14, 15, 11, 12, 13, 9, 10, 11, 12, 13, 14, 10, 11, 12, 10, 11, 12, 11, 12, 13, 11, 12, 13, 11, 9, 10, 11, 12, 13, 9, 10, 11, 9, 10, 11, 10, 11, 12, 10, 11, 12, 10, 11, 12, 13, 14, 15, 11, 12, 13, 11, 10, 11, 12, 13, 14, 10, 11, 12, 9, 10, 11, 11, 12, 13, 10, 11, 12, 10, 11, 12, 11, 12, 13, 11, 12, 13, 11, 9, 10, 11, 12, 13, 9, 10, 11, 9, 10, 11, 10, 11, 12, 10, 11, 12, 10, 11, 12, 12, 13, 14, 11, 12, 13, 11, 10, 11, 12, 13, 14, 10, 11, 12, 9, 10, 11, 11, 12, 13, 10, 11, 12, 10, 11, 12, 11, 12, 13, 11, 12, 13, 11, 8, 9, 10, 11, 12, 8, 9, 10, 8, 9, 10, 9, 10, 11, 9, 10, 11, 9, 10, 11, 12, 13, 14, 10, 11, 12, 10, 10, 11, 12, 13, 14, 10, 11, 12, 8, 9, 10, 11, 12, 13, 9, 10, 11, 9, 10, 11, 10, 11, 12, 10, 11, 12, 10, 10, 11, 12, 13, 14, 10, 11, 12, 10, 11, 12, 11, 12, 13, 11, 12, 13, 9, 10, 11, 12, 13, 14, 10, 11, 12, 10, 7, 8, 9, 10, 11, 7, 8, 9, 7, 8, 9, 8, 9, 10, 8, 9, 10, 8, 9, 10, 11, 12, 13, 9, 10, 11, 9, 10, 11, 11, 12, 13, 10, 11, 12, 7, 8, 9, 10, 11, 12, 8, 9, 10, 8, 9, 10, 9, 10, 11, 9, 10, 11, 9, 10, 11, 12, 13, 14, 10, 11, 12, 10, 11, 12, 12, 13, 14, 11, 12, 13, 8, 9, 10, 11, 12, 13, 9, 10, 11, 9, 8, 9, 10, 11, 12, 8, 9, 10, 8, 9, 10, 9, 10, 11, 9, 10, 11, 9, 10, 11, 12, 13, 14, 10, 11, 12, 9, 10, 11, 12, 13, 14, 10, 11, 12, 8, 9, 10, 11, 12, 13, 9, 10, 11, 9, 10, 11, 10, 11, 12, 10, 11, 12, 10, 9, 10, 11, 12, 13, 9, 10, 11, 9, 10, 11, 10, 11, 12, 10, 11, 12, 9, 10, 11, 12, 13, 14, 10, 11, 12, 10, 8, 9, 10, 11, 12, 8, 9, 10, 8, 9, 10, 9, 10, 11, 9, 10, 11, 9, 10, 11, 11, 12, 13, 10, 11, 12, 10, 11, 12, 12, 13, 14, 11, 12, 13, 8, 9, 10, 11, 12, 13, 9, 10, 11, 9, 10, 11, 10, 11, 12, 10, 11, 12, 10, 8, 9, 10, 11, 12, 8, 9, 10, 8, 9, 10, 9, 10, 11, 9, 10, 11, 9, 10, 11, 12, 13, 14, 10, 11, 12, 10, 9, 10, 11, 12, 13, 9, 10, 11, 8, 9, 10, 10, 11, 12, 9, 10, 11, 9, 10, 11, 10, 11, 12, 10, 11, 12, 10, 11, 12, 13, 14, 15, 11, 12, 13, 9, 10, 11, 12, 13, 14, 10, 11, 12, 9, 10, 11, 11, 12, 13, 10, 11, 12, 10, 9, 10, 11, 12, 13, 9, 10, 11, 9, 10, 11, 10, 11, 12, 10, 11, 12, 10, 11, 12, 13, 14, 15, 11, 12, 13, 10, 9, 10, 11, 12, 13, 9, 10, 11, 9, 10, 11, 10, 11, 12, 10, 11, 12, 10, 11, 12, 11, 12, 13, 11, 12, 13, 11, 10, 11, 12, 13, 14, 10, 11, 12, 9, 10, 11, 11, 12, 13, 10, 11, 12, 10, 11, 12, 11, 12, 13, 11, 12, 13, 11, 9, 10, 11, 12, 13, 9, 10, 11, 9, 10, 11, 10, 11, 12, 10, 11, 12, 10, 11, 12, 12, 13, 14, 11, 12, 13, 11, 10, 11, 12, 13, 14, 10, 11, 12, 9, 10, 11, 11, 12, 13, 10, 11, 12, 10, 11, 12, 11, 12, 13, 11, 12, 13, 11, 9, 10, 11, 12, 13, 9, 10, 11, 9, 10, 11, 10, 11, 12, 10, 11, 12, 10, 11, 12, 12, 13, 14, 11, 12, 13, 11, 10, 11, 12, 13, 14, 10, 11, 12, 9, 10, 11, 11, 12, 13, 10, 11, 12, 10, 11, 12, 11, 12, 13, 11, 12, 13, 11, 10, 11, 12, 13, 14, 10, 11, 12, 10, 11, 12, 11, 12, 13, 11, 12, 13, 10, 11, 12, 12, 13, 14, 11, 12, 13, 11, 10, 11, 12, 13, 14, 10, 11, 12, 10, 11, 12, 11, 12, 13, 11, 12, 13, 11, 12, 13, 12, 13, 14, 12, 13, 14, 11, 10, 11, 12, 13, 14, 10, 11, 12, 10, 11, 12, 11, 12, 13, 11, 12, 13, 11, 12, 13, 12, 13, 14, 12, 13, 14, 12, 11, 12, 13, 14, 15, 11, 12, 13, 10, 11, 12, 12, 13, 14, 11, 12, 13, 11, 12, 13, 12, 13, 14, 12, 13, 14, 12, 10, 11, 12, 13, 14, 10, 11, 12, 10, 11, 12, 11, 12, 13, 11, 12, 13, 11, 12, 13, 13, 14, 15, 12, 13, 14, 12, 11, 12, 13, 14, 15, 11, 12, 13, 10, 11, 12, 12, 13, 14, 11, 12, 13, 11, 12, 13, 12, 13, 14, 12, 13, 14, 12, 9, 10, 11, 12, 13, 9, 10, 11, 9, 10, 11, 10, 11, 12, 10, 11, 12, 10, 11, 12, 13, 14, 15, 11, 12, 13, 11, 11, 12, 13, 14, 15, 11, 12, 13, 9, 10, 11, 12, 13, 14, 10, 11, 12, 10, 11, 12, 11, 12, 13, 11, 12, 13, 11, 11, 12, 13, 14, 15, 11, 12, 13, 11, 12, 13, 12, 13, 14, 12, 13, 14, 10, 11, 12, 13, 14, 15, 11, 12, 13, 11, 8, 9, 10, 11, 12, 8, 9, 10, 8, 9, 10, 9, 10, 11, 9, 10, 11, 9, 10, 11, 12, 13, 14, 10, 11, 12, 10, 11, 12, 12, 13, 14, 11, 12, 13, 8, 9, 10, 11, 12, 13, 9, 10, 11, 9, 10, 11, 10, 11, 12, 10, 11, 12, 10, 11, 12, 13, 14, 15, 11, 12, 13, 11, 12, 13, 13, 14, 15, 12, 13, 14, 9, 10, 11, 12, 13, 14, 10, 11, 12, 10, 9, 10, 11, 12, 13, 9, 10, 11, 9, 10, 11, 10, 11, 12, 10, 11, 12, 10, 11, 12, 13, 14, 15, 11, 12, 13, 10, 11, 12, 13, 14, 15, 11, 12, 13, 9, 10, 11, 12, 13, 14, 10, 11, 12, 10, 11, 12, 11, 12, 13, 11, 12, 13, 11, 10, 11, 12, 13, 14, 10, 11, 12, 10, 11, 12, 11, 12, 13, 11, 12, 13, 10, 11, 12, 13, 14, 15, 11, 12, 13, 11, 9, 10, 11, 12, 13, 9, 10, 11, 9, 10, 11, 10, 11, 12, 10, 11, 12, 10, 11, 12, 12, 13, 14, 11, 12, 13, 11, 12, 13, 13, 14, 15, 12, 13, 14, 9, 10, 11, 12, 13, 14, 10, 11, 12, 10, 11, 12, 11, 12, 13, 11, 12, 13, 11, 9, 10, 11, 12, 13, 9, 10, 11, 9, 10, 11, 10, 11, 12, 10, 11, 12, 10, 11, 12, 13, 14, 15, 11, 12, 13, 11, 10, 11, 12, 13, 14, 10, 11, 12, 9, 10, 11, 11, 12, 13, 10, 11, 12, 10, 11, 12, 11, 12, 13, 11, 12, 13, 11, 12, 13, 14, 15, 16, 12, 13, 14, 10, 11, 12, 13, 14, 15, 11, 12, 13, 10, 11, 12, 12, 13, 14, 11, 12, 13, 11, 10, 11, 12, 13, 14, 10, 11, 12, 10, 11, 12, 11, 12, 13, 11, 12, 13, 11, 12, 13, 14, 15, 16, 12, 13, 14, 11, 10, 11, 12, 13, 14, 10, 11, 12, 10, 11, 12, 11, 12, 13, 11, 12, 13, 11, 12, 13, 12, 13, 14, 12, 13, 14, 12, 11, 12, 13, 14, 15, 11, 12, 13, 10, 11, 12, 12, 13, 14, 11, 12, 13, 11, 12, 13, 12, 13, 14, 12, 13, 14, 12, 10, 11, 12, 13, 14, 10, 11, 12, 10, 11, 12, 11, 12, 13, 11, 12, 13, 11, 12, 13, 13, 14, 15, 12, 13, 14, 12, 8, 9, 10, 11, 12, 8, 9, 10, 8, 9, 10, 9, 10, 11, 9, 10, 11, 9, 10, 11, 12, 13, 14, 10, 11, 12, 10, 10, 11, 12, 13, 14, 10, 11, 12, 8, 9, 10, 11, 12, 13, 9, 10, 11, 9, 10, 11, 10, 11, 12, 10, 11, 12, 10, 11, 12, 13, 14, 15, 11, 12, 13, 10, 11, 12, 12, 13, 14, 11, 12, 13, 9, 10, 11, 12, 13, 14, 10, 11, 12, 10, 9, 10, 11, 12, 13, 9, 10, 11, 9, 10, 11, 10, 11, 12, 10, 11, 12, 10, 11, 12, 13, 14, 15, 11, 12, 13, 10, 11, 12, 13, 14, 15, 11, 12, 13, 9, 10, 11, 12, 13, 14, 10, 11, 12, 10, 11, 12, 11, 12, 13, 11, 12, 13, 11, 11, 12, 13, 14, 15, 11, 12, 13, 11, 12, 13, 12, 13, 14, 12, 13, 14, 10, 11, 12, 13, 14, 15, 11, 12, 13, 11, 8, 9, 10, 11, 12, 8, 9, 10, 8, 9, 10, 9, 10, 11, 9, 10, 11, 9, 10, 11, 12, 13, 14, 10, 11, 12, 10, 11, 12, 12, 13, 14, 11, 12, 13, 8, 9, 10, 11, 12, 13, 9, 10, 11, 9, 10, 11, 10, 11, 12, 10, 11, 12, 10, 9, 10, 11, 12, 13, 9, 10, 11, 9, 10, 11, 10, 11, 12, 10, 11, 12, 9, 10, 11, 12, 13, 14, 10, 11, 12, 10, 4, 5, 6, 7, 8, 4, 5, 6, 4, 5, 6, 5, 6, 7, 5, 6, 7, 5, 6, 7, 8, 9, 10, 6, 7, 8, 6, 7, 8, 8, 9, 10, 7, 8, 9, 4, 5, 6, 7, 8, 9, 5, 6, 7, 5, 6, 7, 6, 7, 8, 6, 7, 8, 6, 7, 8, 9, 10, 11, 7, 8, 9, 7, 8, 9, 9, 10, 11, 8, 9, 10, 5, 6, 7, 8, 9, 10, 6, 7, 8, 6, 5, 6, 7, 8, 9, 5, 6, 7, 5, 6, 7, 6, 7, 8, 6, 7, 8, 6, 7, 8, 9, 10, 11, 7, 8, 9, 6, 7, 8, 9, 10, 11, 7, 8, 9, 5, 6, 7, 8, 9, 10, 6, 7, 8, 6, 7]
print(num[N])