目前使用 watch 指令可以查看某一场比赛的提交记录，已经非常实用了。不过在某些情况下我希望只查看某一题的历史记录，希望能够增加一下这个功能。

It's very useful to use watch to search my previous submissions in a single contest, but sometimes I want to check my submissions on a single problem, hope you can add this feature.