#include<cstdio>
#include<cstdlib>
#include<cstring>
#include<algorithm>
#include<iostream>
#include<cstring>
#include<bits/stdc++.h>

#define int long long

using namespace std;

string str;
char s[100000];

signed main(void){
	
	freopen("horsesnum.in","r",stdin);
	freopen("horsesnum.out","w",stdout);
	
	cin>>str;
	int len=str.length();
	
	int cnt=0;
	for(int i=0;i<len;i++)if((str[i]>='a'&&str[i]<='z')||(str[i]>='A'&&str[i]<='Z'))s[cnt++]=str[i];
	for(int i=0;i<cnt;i++)if(s[i]>='A'&&s[i]<='Z')s[i]+=('a'-'A');
	//cout<<s<<endl;
	
	int num=0;
	for(int i=0;i<cnt;i++){
		if(s[i]=='h'&&s[i+1]=='o'&&s[i+2]=='r'&&s[i+3]=='s'&&s[i+4]=='e'){
			++num;
			if(s[i+5]=='s')num++;
		}
	}
	
	cout<<num<<endl;

	return 0;
}