Submission #941922

---

Source Code Expand

#include <bits/stdc++.h>

using namespace std;

#define pb push_back
#define mp make_pair
#define forn(i, n) for (int i = 0; i < (int)(n); ++i)
typedef long long LL;
typedef pair<int, int> PII;

string s;
int pos = 0;

int main() {
    cin >> s;
    for (char c : s) {
        if (pos == 0 && c == 'C') {
            ++pos;
        }
        if (pos == 1 && c == 'F') {
            ++pos;
        }
    }
    if (pos == 2) {
        cout << "Yes" << endl;
    } else {
        cout << "No" << endl;
    }
    return 0;
}

Submission Info

Judge Result