Problem 2869. There are 10 types of people in the world

Created by James

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1863 Solutions
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Last Solution submitted on May 15, 2022

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3 Comments

3 Comments

Nguyen Huy on 2 Mar 2021

it take me time to understand

akihisa yorozu on 21 Aug 2021

2015 is trap for me.

Tran Tran on 7 Mar 2022

Not Fun when being called a doggo ¯\_( ͡❛ ͜ʖ ͡❛)_/¯

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Solution 3908278

Solution 562534

1 Comment

1 Comment

Frank Pang on 6 Dec 2020

what does regular expression do in this solution?
just for decrease solution size?

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binary palindromes

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Problem 2869. There are 10 types of people in the world

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Problem 2869. There are 10 types of people in the world

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