package Main;
import java.util.*;
public class Main {
    public static void main(String[] args)
    {
        Scanner in = new Scanner(System.in);
        String input = in.next();
        String st="";
        String a="CODE";
        String b="FORCES";
        for (int i = 0; i < input.length(); i++)
        {
        if(input.contains(a)&&input.contains(b))
            st="YES";
                    else
            st="NO";
        }
        System.out.println(st);
   }
}