#include <cstdio>
#include <cstdlib>
#include <cmath>
#include <climits>
#include <cfloat>
#include <map>
#include <utility>
#include <set>
#include <iostream>
#include <memory>
#include <string>
#include <vector>
#include <algorithm>
#include <functional>
#include <sstream>
#include <complex>
#include <stack>
#include <queue>
#include <iomanip>
using namespace std;
#define INF 1e9
#define PI acos(-1)
typedef long long ll;

map<char, ll> cnt;
ll ans=1;

int main() {
	string hello = "helowrd";

	for (char i = 'a'; i <= 'z'; i++) {
		int sub; cin >> sub;
		cnt[i] = sub;
	}
	
	for (int k = 0; k < hello.size(); k++) {
		char fig = hello[k];
		if (fig == 'o') {
			ans *= cnt[fig] / 2;
			cnt[fig] -= cnt[fig] / 2;
			ans *= cnt[fig];
		}
		else if (fig == 'l') {
			ll res = 0;
			for (int i = 0; i <= cnt[fig]; i++) {
				res = max(res, (i*(i - 1) / 2)*(cnt[fig] - i));
			}
			ans *= res;
		}
		else {
			ans *= cnt[fig];
		}
	}

	cout << ans << endl;

	return 0;
}