1371B — Magical Calender

Revision en10, by Kofta, 2020-07-03 07:42:39

I can't understand the line that covered by red. also can someone tell me the formula's name or it's proof.

Thanks for any future comments :)

https://www.imageupload.net/image/cf.zXhns

CFbeb06fd0c7aa39c8.png

History

 
 
 
 
Revisions
 
 
  Rev. Lang. By When Δ Comment
en10 English Kofta 2020-07-03 07:42:39 140
en9 English Kofta 2020-07-03 07:37:18 9 Tiny change: 's name or prove.\n\nThank' -> 's name or it's proof.\n\nThank'
en8 English Kofta 2020-07-03 07:36:35 46 Tiny change: 'nts :)\n\n![ ](h' -> 'nts :)\n\nhttps://www.imageupload.net/image/cf.zXhns\n\n![ ](h'
en7 English Kofta 2020-07-03 07:36:00 5 Tiny change: 'net/image/zXhns)\n' -> 'net/image/cf.zXhns)'
en6 English Kofta 2020-07-03 07:35:31 47
en5 English Kofta 2020-07-03 07:30:26 54
en4 English Kofta 2020-07-03 07:27:35 91
en3 English Kofta 2020-07-03 07:23:51 68
en2 English Kofta 2020-07-03 07:23:11 73 Tiny change: 'omments :)' -> 'omments :)\n\nhttps://codeforces.net/707002/CF.png\n'
en1 English Kofta 2020-07-03 07:21:34 164 Initial revision (published)