No identifier is defined

[QiuXinYan]

💬 Questions and Help

Please outline the questions.
Under the LeetCode plug-in, I can debug and submit, but the vector is shown as an undefined identifier.

[QiuXinYan]

just like this

[jdneo]

The LeetCode extension does not provide any language intellisense related features. Please check if you have installed any language extensions (for example, C++ extension).