Submission #941925

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Source Code Expand

#include <bits/stdc++.h>

using namespace std;

#define REP(i,a,b) for(int i=a;i<(int)b;i++)
#define rep(i,n) REP(i,0,n)
#define all(c) (c).begin(), (c).end()
#define zero(a) memset(a, 0, sizeof a)
#define minus(a) memset(a, -1, sizeof a)
#define watch(a) { cout << #a << " = " << a << endl; }
template<class T1, class T2> inline bool minimize(T1 &a, T2 b) { return b < a && (a = b, 1); }
template<class T1, class T2> inline bool maximize(T1 &a, T2 b) { return a < b && (a = b, 1); }

typedef long long ll;
int const inf = 1<<29;

int main() {

  int N;
  string S;

  cin >> S;
  N = S.size();
  bool ok1 = 0, ok2 = 0;
  rep(i, N) {
    ok1 |= S[i] == 'C';
    ok2 |= S[i] == 'F' && ok1;
  }

  cout << (ok2 ? "Yes" : "No") << endl;
  
  return 0;
}

Submission Info

Judge Result