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 C# (judge verdict: Accepted)

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace 競プロ_Csharp {
    class Program {
        static void Main(string[] args) {

            int i = 1;

            while (true) {

                int a = NextInt();
                if (a == 0) return;

                Println("Case " + i + ": " + a);

                i++;

            }

        }

        public static void Println (Object o) {
            Console.WriteLine(o);
        }

        public static string NextString() {
            return Console.ReadLine();
        }

        public static int NextInt () {
            return int.Parse(Console.ReadLine());
        }

        public static int[] NextInts () {
            string[] a = Console.ReadLine().Split();
            int[] b = new int[a.Length];
            for (int i = 0; i < a.Length; i++) {
                b[i] = int.Parse(a[i]);
            }
            return b;
        }

    }
}