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