Submission #1477671

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Source Code Expand

#include <cstdlib>
#include <iostream>
#include <queue>
#include <vector>
#include <cmath>
#include <string>
#include <algorithm>
using namespace std;
typedef unsigned long long u64;
typedef signed long long l64;
u64 over = 1000000007;

int main(void)
{
  cin.tie(0);
  ios::sync_with_stdio(false);
  cout << fixed;
  string s;
  cin >> s;
  int c = s.find_first_of("C");
  int f = s.find_last_of("F");
  if (c!=string::npos && f!=string::npos && c<f) cout << "Yes" << endl;
  else cout << "No" << endl;
  return 0;
}

Submission Info

Judge Result