p03243 AtCoder Beginner Contest 111 - AtCoder Beginner Contest 111
Kurohashi has never participated in AtCoder Beginner Contest (ABC).

The next ABC to be held is ABC N (the N-th ABC ever held). Kurohashi wants to make his debut in some ABC x such that all the digits of x in base ten are the same.

What is the earliest ABC where Kurohashi can make his debut?

Constraints

* 100 \leq N \leq 999
* N is an integer.

Input

Input is given from Standard Input in the following format:


N


Output

If the earliest ABC where Kurohashi can make his debut is ABC n, print n.

Examples

Input

111


Output

111


Input

112


Output

222


Input

750


Output

777
```python
N=int(input());print(111*(-(-N//111)))
```