#include<bits/stdc++.h>
using namespace std;
int ans=0,cnt=0;
string s1,s2="";
int main(){
    freopen("horsesnum.in","r",stdin);
    freopen("horsesnum.out","w",stdout);
    cin>>s1;
    for(int i=0;i<=s1.length();i++)
    {
        if(s1[i]<'A'||(s1[i]>'Z'&&s1[i]<'a')||s1[i]>'z')
        continue;
        if(s1[i]>='A'&&s1[i]<='Z')
        s2+=(s1[i]+32);
        else
        s2+=s1[i];
    }
    for(int i=0;i<=s2.length()-5;i++)
    {
        if(s2[i]=='h'&&s2[i+1]=='o'&&s2[i+2]=='r'&&s2[i+3]=='s'&&s2[i+4]=='e')
        {
            if(s2[i+5]=='s')
            ans+=2;
            else
            ans++;
        }
    }
    cout<<ans<<endl;
    return 0;
}