agul's blog

OpenCup GP of Udmurtia
By agul, 12 years ago, In Russian

Прошёл очередной opencup, давайте обсуждать задачи.

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12 years ago, hide # |
 
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Is B, all about case analysis? Any easier way?

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    12 years ago, hide # ^ |
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    After some analysis, it comes up that there are actually only three significant cases:
    1) Δ x or Δ y is equal to zero;
    2) Δ x and Δ y have the same sign (both greater than 0 or both less than 0);
    3) Δ x and Δ y have different signs.

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12 years ago, hide # |
 
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Can't find upsolving again.

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12 years ago, hide # |
 
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The letter-indexes of the problems in upsolving differs from letter-indexes in statements.

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12 years ago, hide # |
 
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Given that, there will be qualification round of deadline24, will there be opencup next week?

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