# Number Transformation

时间限制：1s 空间限制：64MB

### 题目描述

Teacher Mai has an integer x.

He does the following operations k times. In the i-th operation, x becomes the least integer no less than x, which is the multiple of i.

He wants to know what is the number x now.

### 输入格式

There are multiple test cases, terminated by a line "0 0".

For each test case, the only one line contains two integers x,k(1<=x<=10^10, 1<=k<=10^10).

### 输出格式

For each test case, output one line "Case #k: x", where k is the case number counting from 1.

### 样例输入

2520 10 2520 20 0 0

### 样例输出

Case #1: 2520 Case #2: 2600

### 提示

没有写明提示

### 题目来源

By 镇海中学