Problem:
Print Test Cases

In the online judge system, a judge file may include multiple datasets to check whether the submitted program outputs a correct answer for each test case. This task is to practice solving a problem with multiple datasets.

Write a program which reads an integer x and print it as is. Note that multiple datasets are given for this problem.

Input

The input consists of multiple datasets. Each dataset consists of an integer x in a line.

The input ends with an integer 0. You program should not process (print) for this terminal symbol.

Output

For each dataset, print x in the following format:

Case i: x

where i is the case number which starts with 1. Put a single space between "Case" and i. Also, put a single space between ':' and x.

Constraints

1 ≤ x ≤ 10000

The number of datasets ≤ 10000

Sample Input

3
5
11
7
8
19
0

Sample Output

Case 1: 3
Case 2: 5
Case 3: 11
Case 4: 7
Case 5: 8
Case 6: 19

Solution in Python3 (judge verdict: Accepted)

#!/usr/bin/env python
# coding: utf-8
#

import sys

def main(c, x):
    if '0' == x: return True
    msg = 'Case %d: %s' % (c, x)
    print(msg)
    return False
    
if '__main__' == __name__:
    counter = 1
    try:
        while True:
            if main(counter, input().strip()): break
            counter += 1
    except EOFError:
        pass