Codeforces Round #717 (Div. 2) C. Baby Ehab Partitions Again（思维）

Baby Ehab was toying around with arrays. He has an array a of length n. He defines an array to be good if there's no way to partition it into 2 subsequences such that the sum of the elements in the first is equal to the sum of the elements in the second. Now he wants to remove the minimum number of elements in

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来源： https://www.cnblogs.com/lipoicyclic/p/14719687.html