#include<iostream>
#include<cassert>
using namespace std;
int C[26];
int main()
{
	ios::sync_with_stdio(false);
	cin.tie(nullptr);
	for(int i=0;i<26;i++)cin>>C[i];
	long ans=1;
	ans*=C['h'-'a'];
	ans*=C['e'-'a'];
	{
		int v=C['l'-'a'];
		int mx=0;
		for(int x=2;x<v;x++)mx=max(mx,x*(x-1)/2*(v-x));
		ans*=mx;
	}
	{
		int v=C['o'-'a'];
		ans*=v/2*(v-v/2);
	}
	ans*=C['w'-'a'];
	ans*=C['r'-'a'];
	ans*=C['d'-'a'];
	cout<<ans<<endl;
}