Looking For 1354G non-random solutions.

Правка en1, от MagicSpark, 2020-05-18 10:08:59

When I'm taking part in Educational Codeforces Round 87,I come up with a random solution.

But I didn't think it can pass.(In fact I'm wrong and the solution has more than 99.99% possibility to pass)

And I think for a long time to find a non-random solution without getting good ideas

Can somebody solve this problem?

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en1 Английский MagicSpark 2020-05-18 10:08:59 364 Initial revision (published)