How to get a green name in AtCoder

Правка en1, от RPdreamer, 2025-02-25 08:19:36

my atcoder name is g_p_y,I found myself stucked in rating around [650,750].

How to break it?

p.s. For example,in ABC394-E,I thought $$$O(n^3)$$$ Floyd in the competition,but the right solution is $$$O(n^4)$$$ bfs?

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en1 Английский RPdreamer 2025-02-25 08:19:36 245 Initial revision (published)