规则Rules：
填入1~5，使得每行、列内，及每个不足5格的宫内数字不重复。至少有5格的宫里宫一定包含了所有类型的数字。
Write 1~5, make numbers no repeated in each Row, Column or Box with no more than 5 cells. Box with at least 5 cells should contain all kinds of numbers.
◆在线涂鸦 Draw it Online
◆在线做 Do it by CTC
◆在线做 Do it by Penpa
