#include <bits/stdc++.h>
#define rep(i,n) for(int i=(0);i<(n);i++)

using namespace std;

typedef long long ll;
typedef unsigned long long ull;
typedef pair<int, int> pii;

template<class T> bool chmax(T &a, const T &b) { if (a<b) { a=b; return 1; } return 0; }
template<class T> bool chmin(T &a, const T &b) { if (a>b) { a=b; return 1; } return 0; }

int main(){
	cin.tie(0);
	ios::sync_with_stdio(false);

	int m = 26;
	vector<ll> alp(m, 0);

	rep(i, m) cin >> alp[i];

	ll ans = 1ll;
	rep(i, m){
		char c = 'a' + i;
		if(c == 'h' || c == 'e' || c == 'w' || c == 'r' || c == 'd'){
			ans *= alp[i];
		}

		if(c == 'o'){
			ans *= (alp[i] / 2) * (alp[i] - alp[i] / 2);
		}

		if(c == 'l'){
			if(alp[i] <= 2) ans = 0;
			ll t = 0;
			for(ll j = 2; j <= alp[i]-1; j++){
				chmax(t, j * (j - 1) / 2 * (alp[i] - j));
			}
			ans *= t;
		}
	}

	cout << ans << endl;
}