| The things you should know: 
 Scroll down to see the Problemset. Judge is a Pentium 4, 2.8GH Computer. If you have trouble viewing HTML, view the PDF files.(but problem A) For all problems assume pi=2*acos(0) or pi=2*cos_inverse(0). The Contest duration may be increased for our mistakes or to give people more
Time to Practice. To send clarification send mail to clarify@onlinejudge.org The Clarification replies will be given via email. But it may also be put in the 
Clarification Board if it is of general interest. Please look at the Clarification Board for any correction notice. Take input from standard input and produce output in standard output
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