Submission #941886

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Source Code Expand

#include <bits/stdc++.h>
using namespace std;
#define all(c) (c).begin(),(c).end()
#define rrep(i,n) for(int i=(int)(n)-1;i>=0;i--)
#define REP(i,m,n) for(int i=(int)(m);i<(int)(n);i++)
#define rep(i,n) REP(i,0,n)
#define iter(c) __typeof((c).begin())
#define tr(it,c) for(iter(c) it=(c).begin();it!=(c).end();it++)
#define mem(a) memset(a,0,sizeof(a))
#define pd(a) printf("%.10f\n",a)
#define pb(a) push_back(a)
#define in(a) insert(a)
#define pi M_PI
#define R cin>>
#define F first
#define S second
#define C class
#define ll long long
#define ln cout<<'\n'
template<C T>void pr(T a){cout<<a;ln;}
template<C T,C T2>void pr(T a,T2 b){cout<<a<<' ';pr(b);}
template<C T,C T2,C T3>void pr(T a,T2 b,T3 c){cout<<a<<' ';pr(b,c);}
template<C T,C T2,C T3,C T4>void pr(T a,T2 b,T3 c,T4 d){cout<<a<<' ';pr(b,c,d);}
template<C T>void PR(T a,ll n){rep(i,n){if(i)cout<<' ';cout<<a[i];}ln;}
ll check(ll n,ll m,ll x,ll y){return x>=0&&x<n&&y>=0&&y<m;}
const ll MAX=1000000007,MAXL=1LL<<61,dx[4]={-1,0,1,0},dy[4]={0,1,0,-1};
typedef pair<int,int> P;

void Main() {
  string s;
  cin >> s;
  int c=0;
  rep(i,s.size()) {
    if(c==0&&s[i]=='C') c++;
    if(c==1&&s[i]=='F') c++;
  }
  if(c==2) pr("Yes");
  else pr("No");
}

int main() {
  ios::sync_with_stdio(0);cin.tie(0);
  Main();return 0;
}

Submission Info

Judge Result