Submission #3428512

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Source Code Expand

#include<cstdio>
#include<vector>
#include<cmath>
#include<cstring>
#include<algorithm>
#include<iostream>
#include<set>
#include<map>
#include<queue>
#include<stack>
using namespace std;
#define ll long long
#define INF 2147483647
#define N 1000000007

int main()
{
	bool flag=false;
	string s;
	cin>>s;
	for(int i=0;i<s.size();i++)
	{
		if(s[i]=='C') flag=true;
		else if(flag&&s[i]=='F') {printf("YES");return 0;} 
	}
	printf("NO");
	return 0;
}

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