import java.io.*;
public class kodujdelku {

  public kodujdelku() {
  }
  public static void main(String[] args) {
    DataOutputStream vystup = new DataOutputStream(System.out);
    ByteArrayOutputStream buffer = new ByteArrayOutputStream();
    DataInputStream vstup = new DataInputStream(System.in);

    try {
      while (vstup.available()>0) buffer.write(System.in.read());
      vystup.writeInt(buffer.size());
      buffer.writeTo(vystup);
    }
    catch (IOException ex) {
      System.out.println("Chyba pri cteni ze standardniho vstupu");
      return;
    }
  }
}