#include<bits/stdc++.h>
using namespace std;
string s;
int i,a[60005],len,k,js,flag[60005];
int main()
{
	freopen("horsesnum.in","r",stdin);
	freopen("horsesnum.out","w",stdout);
	cin>>s;
	len=s.length();
	for(i=0;i<len;i++){
		char gong=s[i];
		if((gong>=97&&gong<=122)||(gong>=65&&gong<=90)){
			a[k]=gong;
			k++;
		}
	}
	for(i=0;i<k;i++){
		if((a[i]==104||a[i]==72)&&(a[i+1]==111||a[i+1]==79)&&(a[i+2]==114||a[i+2]==82)&&(a[i+3]==115||a[i+3]==83)&&(a[i+4]==101||a[i+4]==69)&&(a[i+5]==115||a[i+5]==83)){
			js+=2;
			continue;
		}
		if((a[i]==104||a[i]==72)&&(a[i+1]==111||a[i+1]==79)&&(a[i+2]==114||a[i+2]==82)&&(a[i+3]==115||a[i+3]==83)&&(a[i+4]==101||a[i+4]==69)){
			js+=1;
		}
	}
	cout<<js;
	return 0;
}
// h 104 o 111 r 114 s 115 e 101 a97 z122