#include <cstdio>
#include <cstring>
 
using namespace std;
 
char s[60001], s1[60001];
 
int cnt, l, p;
 
int main()
{
	freopen("horsesnum.in", "r", stdin);
	freopen("horsesnum.out", "w", stdout);
	scanf("%s", s);
	l = strlen(s);
	for(int i = 0; i < l; i++)
		if(s[i] >= 'A' && s[i] <= 'Z')
			s[i] += 'a' - 'A';
	//for(int i = 0; i < l; i++)
	//	printf("%c", s[i]);
	//puts("");
	for(int i = 0; i < l; i++)
		if(s[i] >= 'a' && s[i] <= 'z')
			s1[++p] = s[i];
	//for(int i = 1; i <= p; i++)
	//	printf("%c", s1[i]);
	//puts("");
	for(int i = 1; i <= p; i++)
	{
		if(s1[i] == 'h' && s1[i + 1] == 'o' && s1[i + 2] == 'r' && s1[i + 3] == 's' && s1[i + 4] == 'e' && s1[i + 5] == 's')
		{
			cnt += 2;
			i += 5;
		}
		else if(s1[i] == 'h' && s1[i + 1] == 'o' && s1[i + 2] == 'r' && s1[i + 3] == 's' && s1[i + 4] == 'e')
		{
			++cnt;
			i += 4;
		}
	}
	printf("%d", cnt);
	return 0;
}