#include <iostream>
#include <cstdio>
#include <cstring>
using namespace std;
string a,b;
int ans;
char s[6];
int main(){
	freopen("horsesnum.in","r",stdin);
	freopen("horsesnum.out","w",stdout);
	cin >>a;
	int len=a.size();
	for(int i=0;i<len;i++){
		if(a[i]>66&&a[i]<91) {
			b[i]=(a[i]+32);
		}
		if(a[i]>98&&a[i]<123) b[i]=a[i];
	} 
	int l=0;
	for(int i=0;i<len;i=i+l){
		int k=0,l=0;
		for(int j=i;k<=5;j++){
			if(b[j]=' ') continue;
			else{
				s[k]=b[j];
				k++;
			}
			l++;
		}
		if(s[0]=='h'&&s[1]=='o'&&s[2]=='r'&&s[3]=='s'&&s[4]=='e'&&s[5]=='s') ans=ans+2;
		if(s[0]=='h'&&s[1]=='o'&&s[2]=='r'&&s[3]=='s'&&s[4]=='e'&&s[5]!='s') ans=ans+1;
	}
	cout <<ans;
	return 0;
} 
/*  
65->A   90->Z
97->a   122->z()small
*/