Finding the Price of Sweet Corn

Time limit1sMemory limit1024 MB

Summary

Given the price B that includes a 10% value-added tax, find the price A before tax. B is a multiple of 11, so A is B divided by 11, times 10.

Level: Easy1 of 10
Topics: Math, Implementation
Solved: No attempts yet

Problem

통조림 이미지

The sweet corn costs $A$ won. $A$ is a multiple of $100$ . However, when a $10\%$ value-added tax is added to the sweet corn, the price becomes $B$ won.

Given the price $B$ including value-added tax, find the price $A$ without the tax.

Input

The first line contains an integer $B$ ( $1\,100 \le B \le 9\,900$ ). $B$ is a multiple of $11$ .

Output

Print the price $A$ without value-added tax on the first line.

Examples3

Example 1
Input
```
1100
```
Expected output
```
1000
```
Example 2
Input
```
2970
```
Expected output
```
2700
```
Example 3
Input
```
9900
```
Expected output
```
9000
```