Submission #1172658

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Source Code Expand

#include <cstdio>
#include <iostream>
#include <algorithm>
#include <string>
#include <vector>
#include <queue>
#include <set>
#include <map>
#include <cmath>
using namespace std;

typedef pair<int, int> P;
#define rep(i, n) for (int i=0; i<(n); i++)
#define all(c) (c).begin(), (c).end()
#define _1 first
#define _2 second
#define pb push_back
#define INF 1145141919
#define MOD 1000000007

string s;
signed main() {
  ios::sync_with_stdio(false); cin.tie(0);
  cin >> s;
  int t = 0;
  rep(i, s.length()) {
    if (t == 0 && s[i] == 'C') t = 1;
    else if (t == 1 && s[i] == 'F') t = 2;
  }
  cout << (t==2?"Yes":"No")<<"\n";
  return 0;
}

Submission Info

Judge Result