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Junior Problems
J1: [url=http://wcipeg.com/problem/ccc15j1]Special Day[/url]
J2: [url=http://wcipeg.com/problem/ccc15j2]Happy or Sad[/url]
J3: [url=http://wcipeg.com/problem/ccc15j3]Rövarspråket[/url]
J4: [url=http://wcipeg.com/problem/ccc15j4]Wait Time[/url]
J5: [url=http://wcipeg.com/problem/ccc15j5]Pi-Day[/url]

Senior Problems:
S1: [url=http://wcipeg.com/problem/ccc15s1]Zero That Out[/url]
S2: [url=http://wcipeg.com/problem/ccc15s2]Jerseys[/url]
S3: [url=http://wcipeg.com/problem/ccc15s3]Gates[/url]
S4: [url=http://wcipeg.com/problem/ccc15s4]Convex Hull[/url]
S5: [url=http://wcipeg.com/problem/ccc15s5]Greedy for Pies[/url]