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Clock Math

Limits: 1s, 512 MB

Given a time (hours as H and minutes as M), determine the smaller angle between the two hands of a clock showing the time and print it.

The input will contain two integers: H (0 ≤ H < 12) and M (0 ≤ M < 60).

Print the angle in degrees (accurate to 10^-4).

Input	Output
10 15	142.5000000

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