PROGRAMMING:Fat house water that can't be bought

As a fat house, I like fat house water.
You have 50 yuan. Now the price of fat house water in supermarket fluctuates. How many bottles of fat house water can you buy at most.
###Input format:
Enter a floating-point number n to represent the price of fat house water. The title guarantees that a bottle of fat house water is up to 5 yuan
###Output format:
Output a positive integer to show how many bottles you can buy
###Input example:
Here is a set of inputs. For example:
```in
three
```
###Output example:
The corresponding output is given here. For example:
```out
sixteen
```







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