规则Rules：
填入1~5使得行列内数字不重复，每个宫内有1~5的所有数字。
Write 1~5, to make each line and column no repeated. Each box contains all numbers in 1~5.
◆例题 Example
◆在线涂鸦Draw it Online
◆在线做 Do it by CTC
◆在线做 Do it by Penpa
