Invitation to CodeChef January Long Challenge 2021

[alei]

Congrats to the winners!

DIV 1.

1. bigbag
2. Oleg
3. krijgertje
4. jijiang
5. ltst
6. marckess, best in latin-america!
7. run_timeterror, best in india!

DIV 2.

1. xyr2005
2. watercup
3. sharansh12
4. aert
5. jughead
6. fallingstar
7. ac1go

Also, what happened Behind the scenes