Problem Statement

Given an integer X between -10^{18} and 10^{18} (inclusive), print $\left\lfloor \dfrac{X}{10} \right\rfloor$.

Input

Input is given from Standard Input in the following format:
X

Output

Print $\left\lfloor \frac{X}{10} \right\rfloor$. Note that it should be output as an integer.

Constraints

• -$10^{18} \leq X \leq 10^{18}$
• All values in input are integers.

Sample Input 1

47

Sample Output 1

4

The integers that do not exceed $\frac{47}{10} = 4.7$ are all the negative integers, 0, 1, 2, 3, and 4. The maximum integer among them is 4, so we have $\left\lfloor \frac{47}{10} \right\rfloor = 4$.

Sample Input 2

-24

Sample Output 2

-3

Since the maximum integer not exceeding $\frac{-24}{10} = -2.4$ is -3, we have $\left\lfloor \frac{-24}{10} \right\rfloor = -3$.
Note that -2 does not satisfy the condition, as -2 exceeds -2.4.

Sample Input 3

50

Sample Output 3

5

The maximum integer that does not exceed $\frac{50}{10} = 5$ is 5 itself. Thus, we have $\left\lfloor \frac{50}{10} \right\rfloor = 5$.

Sample Input 4

-30

Sample Output 4

-3

Just like the previous example$, \left\lfloor \frac{-30}{10} \right\rfloor = -3$.

Sample Input 5

987654321987654321

Sample Output 5

98765432198765432

The answer is 98765432198765432. Make sure that all the digits match.
If your program does not behave as intended, we recommend you checking the specification of the programming language you use.
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见题面 Input 部分

见题面 Output 部分