Lu8p1tji/节奏之谜

节奏之谜 (The Mystery of the Rhythm) is the 14th and the last step in the additional part of lu8p1tji.

Content of the puzzle[edit | edit source]

P1[edit | edit source]

You and other members of the same team are closely monitoring the countdown of a puzzle hunt website from 60 seconds to 0 seconds, and then quickly refreshing the webpage, hoping to grab the first pass in the entire puzzle hunt activity——

Due to the sudden and massive traffic, the Puzzle Hunt website server exploded. According to statistics, the CPU usage had reached 99.554% at that time, and most participants were unable to access it.

Your teammate was very lucky to successfully enter one of the question pages, so your team is ready to work together to solve this problem.

Your teammate said: That question has three lines of 16 bit binary encoding and three lines of 18 bit binary encoding. The question also mentioned that one step of the question involves converting binary to decimal. After converting these six lines of binary to decimal (without considering the possibility of the highest bit being a sign bit), they are 43997,42978,10380,235515,93008,8366, but after this step, he doesn't know how to solve it.

P2[edit | edit source]

This part includes 18 pictures. You can see them here.

P3[edit | edit source]

I tried to play Bilibili videos on the theme editing page, but failed.

ovyvovyv:OI1IA4l1E746
  1. NW+S NW+W SW+SE NW+S NE+S W+E NW+N NW+W
  2. 01110 00001 01011 01000 01001 01101 01111 10110
  3. 5 4 9 20 15 18
  4. (a pigpen cipher that says "transmit")
  5. qjwmun
  6. ./-../../-/../---/-.
  7. ⠉⠇⠑⠁⠝⠑⠗
  8. pmachtuoy
  9. gsv yzmtozwvhsr
  10. 63 73 41 21 62 63 74 43 53 43 23 63 62
  11. 32 45 31 44 24 35 45 42 35 34 43 15
  12. teoaseihhrylwds
  13. ---/.-../-.--/--/.--./../.-/-..
  14. 01111 10000 00101 10010 00001 10100 01001 01110 00111 10011 10100 00001 00110 00110
  15. 32 74 23 42 32 73 43 23 42 43 21
  16. 13 34 32 32 45 33 24 43 44 54 34 45 44 23
  17. ⠟⠥⠑⠎⠞⠊⠕⠝⠕⠋⠍⠁⠉⠁⠥
  18. (a pigpen cipher that says "encephalitis")
  19. iirawdlrowgnirudthcamrheweht
  20. 15 16 9 14 9 15 14
  21. qnmzivamzqv
  22. treotloormnab
  23. SW+S E+SW NE+S W+E NW+SW NW+S SW+S SW+SE W+SE
  24. vcgizxfiirxfozi
  25. 24 33 44 23 15 12 31 11 13 25 43 15 11
  26. 01100 01111 01110 00111 10100 10010 00001 00100 01001 10100 01001 01111 01110
  27. (a pigpen cipher that says "universalism")
  28. yfhrmvhh kvlkov
  29. wzxxnf
  30. 14 5 5 4
  31. 32 62 32 73 41 93 43 62 31 32 92
  32. NW+N W+SW NE+S NW+S NW+W E+SW E+SW SW+S SW+SE N+S NE+S W+E
  33. asrlamscutainui
  34. -/./.../-/.-/--/./-./-
  35. eciffodaeh
  36. ⠉⠗⠑⠎⠉⠑⠝⠲⠕
  37. 10010 00101 00111 01001 10011 10100 00101 10010
  38. evrnetniomns
  39. ⠏⠕⠇⠊⠞⠃⠥⠗⠕
  40. 33 34 33 13 34 32 32 24 43 43 24 34 33 15 14
  41. 43 61 61 82 62 63 71 73 32 23 43 71 43 81 21 81 43 63 62
  42. (a pigpen cipher that says "groundswell")
  43. vmulixvnvmg
  44. faizebqabxq
  45. W+E NW+W NW+S N+SW W+E SW+S N+S NW+SW NW+W
  46. 00110 10010 00101 00101 00001 00111 00101 01110 10100
  47. ecaresroh
  48. .../-/.-./..-/-.-./-/..-/.-./.
  49. W+E SW+SE SW+S N+W NW+W NE+SW NW+E E+SW NE+S W+E SW+S W+SE NE+S NW+SW NW+SW
  50. lapytehcra
  51. 01110 01111 10010 10100 01000 00101 10010 01110 11010 01000 01111 10101
  52. 13 21 19 9 3 3 12 21 2
  53. 15 31 15 13 44 42 24 13 35 34 52 15 42
  54. fldrcoimietr
  55. lyhxfizmgrhn
  56. (a pigpen cipher that says "thenceforth")
  57. ./-./-.-./-.--/-.-./.-../---/.--./.-/./-../../.-
  58. ⠝⠁⠞⠊⠕⠝⠁⠇⠊⠞⠊⠑⠎
  59. 91 32 43 41 42 22 73 43 31 41 32
  60. erthyngvbaf

Solution of the puzzle[edit | edit source]

P1[edit | edit source]

Firstly, you need to convert these numbers back to binary.

1010101111011101
1010011111100010
0010100010001100

111001011111111011
010110101101010000
000010000010101110

Because this is a group of three rows and the number of columns is even, it is not difficult to think of Braille encryption. After encoding, you can get:

blogqixi
designnum

That means you should find an article about the Qixi Festival in cff_0102's blog.

It is not hard to find, because of the blog search function in Luogu:

https://www.luogu.com.cn/blog/cff-0102/qi-xi

P2[edit | edit source]

Upon careful observation, it was found that each image has a different watermark, some with a username on them, while others do not. It is not difficult to think of converting the username on the watermark to 0 and 1, as mentioned in the previous clipboard, which involved converting binary to decimal in a certain step of this question. From this, the binary number 011011100010111100 can be obtained, which is the decimal number 112828.

So the design number is 112828, then you can enter here.

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