import java.io.*;

public class StandardRead{
	public static void main(String args[])throws IOException{
		 BufferedReader in = new BufferedReader(new InputStreamReader (System.in)) ;
		 BufferedWriter out = new BufferedWriter(new FileWriter("Data.txt"));
		 String input;
		 char i='1';
		 System.out.println("input strings when input \"exit\" to exit:");
		 input = in.readLine();
		 while(!input.equals("exit")){	//輸入exit結束
		 //	System.out.println(i+": "+input);
			out.write(i+": ");
			out.write(input);
			out.newLine();
			i++;
			input = in.readLine();
		 }
		out.close();

	}
}