Language: 日本語 | English
Overview
When you click [Tasks] tab in AtCoder contest pages, you can open a drop-down list linked to each problem.
Install
If you have not yet installed Tampermonkey, please install it.
Click [Install this script] on this site, then click [Install] again when you get to the confirmation screen.
How to Use
When you click [Tasks] tab on the contest page, a drop-down list linked to each problem will appear, and you can move to each problem by clicking on it.
Also, when you click [Task Table], you can move to the problem table page as usual.
If you check [Open in a new tab] checkbox, the target page will open in a new tab.

When you click [Open at once...], a dialog box will open.
First, select [All] or [Specify the range]. When you choose [Specify the range], you can set the range of problems you want to open by clicking on the drop-downs on the right. The limit of the number of problems that you can open at once is 20.
Also, if you check [Open in reverse order] checkbox, the problems will be open in reverse order.
Then, you can open all selected problems by clicking [Open at once] button in the lower right corner.
However, if pop-ups are blocked in your browser settings, the problems will not open even if you click the button. In that case, please change your browser settings and allow pop-ups.
(In Chrome, when pop-ups are blocked, an icon will appear in the address bar. you can allow pop-ups by clicking on it and selecting "Always allow.")

Repository
GitHub: https://github.com/luuguas/AtCoderListingTasks
If you have any bug reports or suggestions for improvement, please contact me through the Issues or Pull Requests page.