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In Problem D, Why in the solution code of the author he say that when all of numbers are positive or all of them are negative then answer is ans-2*minValue ????? |
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In problem D, Why it is better to put trap on cycle, although there may be cheaper way to put trap on each path leads to this cycle like that. https://drive.google.com/open?id=19ff-GgeGhbhGXh5MykElhYXB3EErpq_9 |
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In problem D... Why if xor of a1 a2 ...an != to xor of b1 b2 ...bm the answer is no?? |
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What is the solution of problem D???? |
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I do the same but I get wrong answer http://mirror.codeforces.com/contest/844/submission/29757370 |
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