import java.io.*;

public class IO {
    public static void dump(InputStream src, OutputStream dest) throws IOException {
        try(InputStream input = src;OutputStream output = dest) {
            byte[] data = new byte[1024];
            int length;
            while ((length = input.read(data)) != -1) {
                output.write(data, 0, length);
            }
        }
    }
}