Complete Number Theory Practice - Noob to Expert | Topic Stream 9

[yasser_hussain]

Timestamps
A - Maximum GCD 17:59
B - Ehab And GCD 34:05
C - Cat Cycles 39:57
D - New Year 53:29
E - Math 1:17:49
F - Meaningless Operations 1:43:40
G - Floor And Mod 2:06:04
H - Enlarge GCD 2:36:50
I - Remainders game 3:04:18
J - Co Prime Subsequence Redux 3:22:28

[Live-hhli]

These topic stream videos are truly awesome.
Please make more of it.
I appreciate the work you do.

[Shubham-hdmp]

Timestamp:
A - Maximum GCD 18:15
B - Ehab and GCD 34:00
C - Cat Cycle 40:25
D - New Year 53:29
E - Math 01:17:49
F - Meaningless Operations 01:43:49
G - Floor And Mod 02:06:06
H - Enlarge GCD 02:36:50
I - Remainders Game 03:03:30
J - Coprime Subsequences Redux 03:22:30
K - Two Divisors 03:28:25
L - Congruence Equation 03:39:35

[userpmzjah]

I love topic streams! I plan to do all problems on topic streams and then do virtual contests weekly to get blue/purple

[revanthkalavala]

Problem A. Enlarge GCD

You need to delete minimal number of integers such that gcd of remaining will be strictly bigger than initial gcd of all integers.

[prakhargarg]

TimeSTamps
K. Two Divisors 3:28:16
L: Cngruence equaltion: 3:40:00
M: Mocha Stars 4:04:00

[kushaagra]

Great stream! Also I'm sure if you made some sort of a roadmap it'd do well on youtube because it would definitely help a lot of people out!

[susankamajumder]

timestamp would be really helpful to navigate.

[expansion_forever]

hello sir can you please elaborate the explanation of question d

[algotalk]

Love from India u r really hard worker

[adityasharma]

how is the pattern 001001001 in the third question

[revanthkalavala]

anyone cares explaining the part in problem G ? or suggesting similar problem or tutorial would be helpful. It looks like
standard variation of knapsack ?

[ガアラ-hh]

19 is easy it’s obvious both a and b must be at least n/2 then you have to look further

[justworkfine]

Can I started with this video for cp I am newbie