nnnnn

Hsara and Simone send each other messages that nobody else can read. This time Simone invented a sneaky cipher. To send Hsara a non-negative integer $n$, she encrypts it as follows.

Let $d(n)$ be the decimal expansion of $n$. Write $d(n)$ down $n$ times in a row and call the resulting string $x$. The encryption of $n$ is the length of $x$.

Take $n = 10$. Then $x = 10101010101010101010$, which has length $20$, so the encryption of $10$ is $20$.

For $n = 0$ the string $x$ is empty, so the encryption of $0$ is $0$.

Hsara wrote a decryption program without any trouble. Can you?

The first and only line contains an integer $L$ ($0 \le L \le 10^{10^6}$), the encryption of some non-negative integer $n$.

Print one line containing the integer $n$.