Cofo PH & PC (Cofo Problem hider and problem chooser)

Download it from Github.

Cofo problem hider and problem chooser : hide solved problems in codeforces problemset page !!!!! and randomly choose problems with rate that you say that you dont solved it yet !!!e

use "Load Unpacked" to install it !

Install the chrome extention and once Enter your UserName and change theme between black and white

Enter two numbers then extension will choose a unsolved problem between the numbers and open it in a new tab !

note : if you don't enter your username the extention will suggest a random problem and dont care about you solved it or not!

Now no need to explore problemset page for a new problem just enter 2 numbers !!!!!

And the second feature hide unsolved problems in problemset page again make the upsolving easier.

Before Click :

After Click :

Good Luck & Have Fun

UPD : Added problem chooser for atcoder !!!!!

Donwload it from Github

use it for atcoder !