Submission #1677476

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Source Code Expand

#define _CRT_SECURE_NO_WARNINGS

#include <iostream>
#include <string>
#include <vector>
#include <cmath>
#include <fstream>
#include <set>
#include <utility>
#include <algorithm>

#define rep(i,p,n) for(int i=p;i<n;i++)
#define lli long long int
#define vi vector<int> 

using namespace std;

void p(int x) {
	cout << x << endl;
}

void pp(string s) {
	cout << s << endl;
}


int main() {
	string s;
	cin >> s;

	bool c = true, f = true;

	rep(i, 0, s.length()) {
		if (s[i] == 'C')c = false;
		if (s[i] == 'F')f = false;
	}

	if (!c && !f) pp("Yes");
	else pp("No");



	return 0;
}

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