package yukicoder;
import java.util.Scanner;
public class Q073 {
	public static void main(String[] args)throws Exception{
		new Q073().solve();
	}
	void solve(){
		Scanner sc=new Scanner(System.in);
		String s="abcdefghijklmnopqrstuvwxyz";
		long h=0,e=0,l=0,o=0,w=0,r=0,d=0;
		for(int i=0;i<26;i++){
			int a=sc.nextInt();
			if(i==7)h=a;
			else if(i==s.indexOf("e"))e=a;
			else if(i==s.indexOf("l"))l=a;
			else if(i==s.indexOf("o"))o=a;
			else if(i==s.indexOf("w"))w=a;
			else if(i==s.indexOf("r"))r=a;
			else if(i==s.indexOf("l"))l=a;
			else if(i==s.indexOf("d"))d=a;
		}
//		System.out.println(h+" "+e+" "+l+" "+o+" "+w+" "+r+" "+d);
		long x=(long)((l+1+Math.sqrt(l*l-l+1))/3.0);
		long o1=o/2;long o2=o-o1;o=0;
		long ans=Math.max(h*e*w*r*(l-x)*d*o1*o2*x*(x-1)/2, h*e*w*r*(l-x-1)*d*o1*o2*(x+1)*x/2);
		System.out.println(ans);		
//		System.out.println(s.indexOf("h"));
//		System.out.println(s.indexOf("e"));
//		System.out.println(s.indexOf("l"));
//		System.out.println(s.indexOf("o"));
//		System.out.println(s.indexOf("w"));
//		System.out.println(s.indexOf("r"));
//		System.out.println(s.indexOf("d"));
	}


}