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15.6
Suggested Problems
111401
/
10135
herding frosh
111402
/
10245
the closest pair problem
111403
/
10043
chainsaw massacre
111404
/
10084
hotter colder
111405
/
10065
useless tile packers
111406
/
849
radar tracking
111407
/
10088
trees on my island
111408
/
10117
nice milk
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