Russian Math Olympiad | A Very Nice Number Theory Problem
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Пікірлер: 4
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this was too easy
You could right away notice that (a+b) and (a-b) are either both odd or both even, and exclude pairs were one is even and one is odd. Also in Russian olympiads you will not score much for trial and error :)
well i broke 36 into factors and did it by hit and trial.(I missed (10,-8) soln) took me around 45sec