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 Rust (judge verdict: Accepted)

fn main() {
    let mut nums: Vec<i32> = Vec::new();

    loop {
        let mut s = String::new();
        std::io::stdin().read_line(&mut s).unwrap();
        let num: i32 = s.trim().parse().unwrap();
        if num == 0 {
            break;
        }
        nums.push(num);
    }

    for i in 0..nums.len() {
        println!("Case {}: {}", i + 1, nums[i]);
    }
}