Solutions for April Fools Day Contest 2023 (Collection)

Revision en2, by thanhchauns2, 2023-04-01 21:02:53

Hi, I collected the solutions for the problems of April Fools Day Contest 2023. Before the official editorial being posted, we can discuss about the problems here.

P/s: The editorial was published.

1812A - Are You a Robot?

I tried to submit NO, but what we all need is to submit security

1812B - Was it Rated?

It's about the first 25 contest ever, the 15-th, 20-th and 21-th one was unrated.

1812C - Digits

The first test case has $$$3$$$ numbers, the second has $$$1$$$, and the third has $$$4$$$. Yes, they are following the order of number pi.

314159265358979323846264338327950288419716939937510582097494459230781640628620899862803482534211706798214808651328230664709384460955058223172535940812848111745

Take this string into your code and you will be fine. Multiply all number in a test and get the answer.

1812D - Trivial Conjecture

Just try number 0.

More precisely

1812E - Not a Geometry Problem

Just try number 0 again.

More precisely

1812F - Factorization

The larger number is a prime, the smaller number's prime divisor can be found using Wolfram Alpha, which is $$$4201403994187$$$.

1812G - Colour Vision

The color of the image is #01722B. Just copy the editorial for problem 1722B and submit.

1812H - Expected Twist

The statement said the number are generated randomly, and $$$624$$$ is how we crack mt19937.

1812I - Mountain Climber

abcdefghijklmnopqrstuvwxyz

The letters bdfhklt are taller, and gjpqy have a "foot". Replace them with ( and ). Check if the sentence is balanced or not.

1812J - Unmysterious Language

Just says Please read my submission or Please give my AC, or something like that.

History

 
 
 
 
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  Rev. Lang. By When Δ Comment
en8 English thanhchauns2 2023-04-01 21:11:57 12
en7 English thanhchauns2 2023-04-01 21:11:17 26
en6 English thanhchauns2 2023-04-01 21:10:28 398
en5 English thanhchauns2 2023-04-01 21:09:53 143
en4 English thanhchauns2 2023-04-01 21:09:28 408
en3 English thanhchauns2 2023-04-01 21:05:38 535
en2 English thanhchauns2 2023-04-01 21:02:53 4 Tiny change: 'ubmit.\n\n[problem:1' -> 'ubmit.\n\n### [problem:1'
en1 English thanhchauns2 2023-04-01 21:02:25 2000 Initial revision (published)