#include <bits/stdc++.h>
using namespace std;

using ll = long long;

int main(void) {
	vector<int> cnt(26);
	for(int i = 0; i < 26; ++i) cin >> cnt[i];
	
	ll ans = 1;
	ans *= cnt['d' - 'a'];
	ans *= cnt['e' - 'a'];
	ans *= cnt['h' - 'a'];
	ans *= cnt['r' - 'a'];
	ans *= cnt['w' - 'a'];
	
	int oc = cnt['o' - 'a'];
	ans *= (oc / 2) * ((oc + 1) / 2);
	
	int lc = cnt['l' - 'a'], m = 0;
	for(int i = 2; i < lc; ++i) m = max(m, i * (i - 1) / 2 * (lc - i));
	ans *= m;
	
	cout << ans << "\n";
	
	return 0;
}