Help in editorial

Правка en1, от Aleph-null, 2023-01-31 18:29:52

This editorial problem E1, Erase and Extend, can someone please give a logical explanation as to how the optimal string is supposed to be a repetition of a prefix? The editorial takes a lot of leaps and the comments do not have any explanation. Thanks. (Ask me for further clarification if needed)


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en1 Английский Aleph-null 2023-01-31 18:29:52 359 Initial revision (published)