规则Rules：
标准数独基础上，每个区域内都是从左到右、从上到下的两位数，提示表示这些两位数四舍五入后的结果。
Classic rules applied. Additionally, clues in each cage indicate the result of rounding that multi-digit number (from left to right, up to down) to the nearest ten.
◆例题 Example
◆在线做 Do it by CTC
◆在线做 Do it by Penpa
