The things you should know:

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Scroll down to see the problemset

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The default memory limit for each problem is 32 MB

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Note that Task F is taken from our previous contest, OIPC

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The contest duration may be increased or decreased for our mistakes or to give people more time to practice

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The clarification replies will be given via email. But it may also be put in the Clarification Board if it is of general interest

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Please look at the Clarification Board for any correction notice

The Problemset

Serial, Title & HTML link




Time Limit

(A) Simplifying Fractions




1 second

(B) Andy's First Dictionary




3 seconds

(C) Travel in Desert




5 seconds

(D) Headmaster's Headache




2 seconds

(E) Dora Trip




3 seconds

(F) Trouble of 13-Dots




2 seconds

Observer and Friends @ 2005