Observation / Thinking problems

Правка en1, от buihoatpt1874, 2020-04-18 18:00:28

Hello Codeforces community ! Recently I found out that I am very weak at problems that requires quick and precise observation, like 1330D, like I always solve these kinds of problem way to slow or unable to solve them at all. Can you please suggest problems like that ? I know there is tags in problemset, but I believe good problems recommended by people who solved them will be more beneficial for me and other people aswell. Thanks in advance.

Теги observation

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en3 Английский buihoatpt1874 2020-04-18 18:13:35 0 (published)
en2 Английский buihoatpt1874 2020-04-18 18:12:53 1 Tiny change: 'at requires quick and' -> 'at require quick and' (saved to drafts)
en1 Английский buihoatpt1874 2020-04-18 18:00:28 527 Initial revision (published)