Known LeetCode problem id, but don't know how to get there? Just add /<problem-id> at the end of lcid.cc, then the browser will redirect you to the problem page.
Redirect to LeetCode problem page (global):
Redirect to LeetCode problem page (China):
Fetch LeetCode problem brief info (json):
Note: Problems info is not up-to-date. It updates once a day.