#include <bits/stdc++.h>
using namespace std;
long long Set(long long N, long long pos) { return N = N | (1 << pos); }
long long reset(long long N, long long pos) { return N = N & ~(1 << pos); }
bool check(long long N, long long pos) { return (bool)(N >> pos & 1); }
bool cmp(const pair<int, int> &a, const pair<int, int> &b) {
  return (a.second > b.second);
}
long long bigMod(long long base, long long power, long long mod) {
  if (power == 0) return 1;
  if (power % 2 == 1) {
    long long p1 = base % mod;
    long long p2 = bigMod(base, power - 1, mod) % mod;
    return (p1 * p2) % mod;
  } else {
    long long p1 = bigMod(base, power / 2, mod) % mod;
    return (p1 * p1) % mod;
  }
}
void solve() {
  string s;
  cin >> s;
  int n = (int)s.size();
  if (n < 10) {
    cout << "NO\n";
    return;
  }
  for (int i = 0; i < n; i++) {
    string sub = "";
    for (int j = 0; j < i; j++) {
      sub += s[j];
    }
    for (int j = n - (10 - i); j < n; j++) {
      sub += s[j];
    }
    if (sub == "CODEFORCES") {
      cout << "YES\n";
      return;
    }
  }
  cout << "NO\n";
}
int main() {
  ios_base::sync_with_stdio(0);
  cin.tie(0);
  cout.tie(0);
  int tc = 1;
  solve();
  return 0;
}
