feat: add weekly contest 381 and biweekly contest 122

[yanglbme]

No description provided.

[idoocs]

Images automagically compressed by Calibre's image-actions ✨

Compression reduced images by 62.9%, saving 209.79 KB.

Filename	Before	After	Improvement	Visual comparison
solution/3000-3099/3014.Minimum Number of Pushes to Type Word I/images/keypaddesc.png	35.31 KB	15.32 KB	-56.6%	View diff
solution/3000-3099/3014.Minimum Number of Pushes to Type Word I/images/keypadv1e1.png	35.35 KB	15.32 KB	-56.7%	View diff
solution/3000-3099/3014.Minimum Number of Pushes to Type Word I/images/keypadv1e2.png	35.40 KB	15.32 KB	-56.7%	View diff
solution/3000-3099/3015.Count the Number of Houses at a Certain Distance I/images/example2.png	17.07 KB	4.63 KB	-72.9%	View diff
solution/3000-3099/3015.Count the Number of Houses at a Certain Distance I/images/example3.png	24.09 KB	6.34 KB	-73.7%	View diff
solution/3000-3099/3015.Count the Number of Houses at a Certain Distance I/images/example5.png	19.57 KB	4.97 KB	-74.6%	View diff
solution/3000-3099/3016.Minimum Number of Pushes to Type Word II/images/keypaddesc.png	35.31 KB	15.32 KB	-56.6%	View diff
solution/3000-3099/3016.Minimum Number of Pushes to Type Word II/images/keypadv1e1.png	35.35 KB	15.32 KB	-56.7%	View diff
solution/3000-3099/3016.Minimum Number of Pushes to Type Word II/images/keypadv1e2.png	35.40 KB	15.32 KB	-56.7%	View diff
solution/3000-3099/3017.Count the Number of Houses at a Certain Distance II/images/example2.png	17.07 KB	4.63 KB	-72.9%	View diff
solution/3000-3099/3017.Count the Number of Houses at a Certain Distance II/images/example3.png	24.09 KB	6.34 KB	-73.7%	View diff
solution/3000-3099/3017.Count the Number of Houses at a Certain Distance II/images/example5.png	19.57 KB	4.97 KB	-74.6%	View diff

1804 images did not require optimisation.