(540A)codeforce

#include <bits/stdc++.h>

#define LOCAL
#define ll long long
#define lll unsigned long long
#define MAX 1000009
#define eps 1e-8
#define INF 0x7fffffff
#define mod 1000000007

using namespace std;
/*

题意：意思只是截一下然后组成codeforce，最开始我想错了，我以为是无限截取，实际就是在字符串串中找两部分，可以组成codefoce....

想法：

*/

int main()
{
    //freopen("date.in","r",stdin);
    string s;
    while(cin>>s)
    {
        int flag = 0;
        if(s.size()<=10)
        {
            puts("NO");
            continue;
        }
        for(int i = 0;i<s.size();i++)
        {
            for(int j = 1;j<=s.size();j++)
            {
                if(s.substr(0,i)+s.substr(j)=="CODEFORCES")
                {
                    flag = 1;
                    break;
                }
            }
        }
        if(flag)
            puts("YES");
        else
            puts("NO");
    }
    return 0;
}