103451: [Atcoder]ABC345 B - Integer Division Returns

Problem Statement

Given an integer $X$ between $-10^{18}$ and $10^{18}$, inclusive, print $\left\lceil \dfrac{X}{10} \right\rceil$.
Here, $\left\lceil a \right\rceil$ denotes the smallest integer not less than $a$.

Constraints

• $-10^{18} \leq X \leq 10^{18}$
• $X$ is an integer.

Input

The input is given from Standard Input in the following format:

$X$

Output

Print $\left\lceil \dfrac{X}{10} \right\rceil$ as an integer.

Sample Input 1

27

Sample Output 1

3

The integers not less than $\frac{27}{10} = 2.7$ are $3, 4, 5, \dots$. Among these, the smallest is $3$, so $\left \lceil \frac{27}{10} \right \rceil = 3$.

Sample Input 2

-13

Sample Output 2

-1

The integers not less than $\frac{-13}{10} = -1.3$ are all positive integers, $0$, and $-1$. Among these, the smallest is $-1$, so $\left \lceil \frac{-13}{10} \right \rceil = -1$.

Sample Input 3

40

Sample Output 3

4

The smallest integer not less than $\frac{40}{10} = 4$ is $4$ itself.

Sample Input 4

-20

Sample Output 4

-2

Sample Input 5

123456789123456789

Sample Output 5

12345678912345679