#include<bits/stdc++.h>
using namespace std;
string a;
char b[20005];
int len=0;
int ans=0;
int main(){
	freopen("horsesnum.in","r",stdin);
	freopen("horsesnum.out","w",stdout);
	cin>>a;
	for(int i=0;i<a.length();i++){
		if(a[i]>='a'&&a[i]<='z'){
			len++;
			b[len]=a[i];
		}else{
			if(a[i]>='A'&&a[i]<='Z'){
				len++;
				b[len]=a[i]-'A'+'a';
			}
		}
	}
	for(int i=1;i<=len;i++){
		if(b[i]=='h'&&b[i+1]=='o'&&b[i+2]=='r'&&b[i+3]=='s'&&b[i+4]=='e'){
			if(b[i+5]=='s'){
				ans+=2;
			}else{
				ans+=1;
			}
		}
	}
	cout<<ans;
	fclose(stdin);
	fclose(stdout);
	return 0;
}