How to improve the speed of solving relatively simple problems?

Правка en1, от Lwchicky0, 2023-04-09 14:41:10

When I am Participate in a div2 contest, I always need 3~5 minutes to solve A, but I see that lots of people solve A less than 2 minutes, even less than 1 minute??! How can they do that? How to improve the speed of solving relatively simple problems?

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en1 Английский Lwchicky0 2023-04-09 14:41:10 313 Initial revision (published)