Description

Input a Fahrenheit temperature and output the corresponding Celsius temperature. The formula is $c = (F - 32) \times 5 / 9$.

Input Format

The input contains multiple lines, each line representing a Fahrenheit temperature (integer).

Output Format

For each Fahrenheit temperature, output the corresponding Celsius temperature, one per line. Round the result to two decimal places.

100
151
0

37.78
66.11
-17.78

译文

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