SRM 731 Div1_easy

Revision en1, by Least_but_not_the_last, 2018-03-19 15:31:51

This is the problem. Here we can't change child order. But how you would solve this problem if we could change child order? Thanks.

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en1 English Least_but_not_the_last 2018-03-19 15:31:51 226 Initial revision (published)