package gcj;

import java.io.BufferedReader;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.PrintStream;

public abstract class SolverBase {

    public static final String TOKEN_SEPARATOR = " ";

    public static final String IMPOSSIBLE = "IMPOSSIBLE";

    public String problemName;

    public boolean verbose = false;

    public SolverBase(String problemName) {
        this.problemName = problemName;
    }

    public void solve(InputStream in, PrintStream out) throws Exception {
        InputStreamReader isr = new InputStreamReader(in);
        BufferedReader reader = new BufferedReader(isr);
        long N = Long.parseLong(reader.readLine());
        for (long i = 1; i <= N; i++) {
            out.print("Case #" + i + ": ");
            solveSingle(reader, out);
        }
    }

    public abstract void solveSingle(BufferedReader reader, PrintStream out) throws Exception;

    public long[] readSingleLineLongArray(BufferedReader reader) throws Exception {
        String[] longsAsStrings = readSingleLineStringArray(reader);
        long[] longs = new long[longsAsStrings.length];
        for (int i = 0; i < longsAsStrings.length; i++) {
            longs[i] = Long.parseLong(longsAsStrings[i]);
        }
        return longs;
    }

    public int[] readSingleLineIntArray(BufferedReader reader) throws Exception {
        String[] intsAsStrings = readSingleLineStringArray(reader);
        int[] ints = new int[intsAsStrings.length];
        for (int i = 0; i < intsAsStrings.length; i++) {
            ints[i] = Integer.parseInt(intsAsStrings[i]);
        }
        return ints;
    }

    public String[] readSingleLineStringArray(BufferedReader reader) throws Exception {
        String line = reader.readLine();
        if (verbose) {
            System.out.println("Reading line " + line);
        }
        return line.split(TOKEN_SEPARATOR);
        // return StringUtils.split(line, TOKEN_SEPARATOR);
    }

    public String[][] readStringArrays(BufferedReader reader, int lines) throws Exception {
        String[][] arrays = new String[lines][];
        for (int i = 0; i < lines; i++) {
            arrays[i] = readSingleLineStringArray(reader);
        }
        return arrays;
    }

    public char[][] readCharArrays(BufferedReader reader, int lines) throws Exception {
        char[][] arrays = new char[lines][];
        for (int i = 0; i < lines; i++) {
            String line = reader.readLine();
            arrays[i] = line.toCharArray();
        }
        return arrays;
    }

    public long[][] readLongArrays(BufferedReader reader, int lines) throws Exception {
        long[][] arrays = new long[lines][];
        for (int i = 0; i < lines; i++) {
            arrays[i] = readSingleLineLongArray(reader);
        }
        return arrays;
    }

    protected void check(boolean b) {
        if (!b) {
            throw new IllegalStateException("Check failed");
        }
    }
}
