# DCP-217: The Largest Number Back to All Problems

**Akash** is good at mathematics. One day his father give him a problem. He gives Akash two positive integers **N** and **P**. Akash has to find the ***largest number that can be formed by replacing digits at at most P places in the Number N***. Akash seems that the problem is very tough for him. So he asked you for your help. You will be given two positive integers **N** and **P**. You have to output the largest integer number that can be made by the above procedure. Input: ------ The first line of the input is the number of test cases **T(1 ≤ T ≤ 80)**.<br> Each of the **T** lines contains two integers **N(1 ≤ N ≤ 10^18)** and **P(0 ≤ P ≤ 9)** separated by a single space. Output: ------- For each test case, print a single line **“Case A: X"**(without quotation marks)starting from one in one line. Here **A** is the case number and **X** is the largest number. Sample Input ------------ 2 193 2 70843010538381368 7 Sample Output ------------- Case 1: 999 Case 2: 99999990538381368

### Problem Limits

 Language Time Limit (seconds) C 1.00 C++ 1.00 C++14 1.00 C# 3.00 Go 3.00 Java 3.00 JavaScript 3.00 Objective-C 3.00 Perl 3.00 PHP 3.00 Python 3.00 Python3 3.00 Ruby 3.00 VB.Net 3.00

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