Fahrenheit to Celsius

Different countries prefer different temperature measurements. Two of the most popular measures are Celsius and Fahrenheit. To convert Fahrenheit to Celsius one can use the following formula:

You are asked to write a program to automate the process of converting from Fahrenheit to Celsius.

The program should receive a single input - Fahrenheit (a floating-point number). And should print the resulting Celsius in the output.

Input

Output

32

0

100

37.7778

Constraints

Time limit: 2 seconds

Memory limit: 512 MB

Output limit: 1 MB

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