using System;
using System.Collections;
using System.Collections.Generic;
 
class TEST{
	static void Main(){
		Sol mySol =new Sol();
		mySol.Solve();
	}
}

class Sol{
	public void Solve(){
		//helloworld
		//dehllloorw
		
		int[] B=new int[26];
		String hh="helloworld";
		for(int i=0;i<hh.Length;i++){
			B[hh[i]-'a']++;
		}
		
		long cnt=1;
		for(int i=0;i<26;i++){
			if(B[i]==0)continue;
			if(B[i]==1){
				cnt*=Math.Max(A[i]-B[i]+1,0);
			}
			if(B[i]>1){
				if(i==(int)('l'-'a')){
					// nC2*mC1 n+m=restのMaxを求める
					long rest=(long)(A[i]-B[i]);
					if(rest<0){
						cnt*=0;
						break;
					}
					long lmax=-1;
					for(long j=0;j<=rest;j++){
						long l=(2+j)*(2+j-1)/2;
						l*=(1+rest-j);
//Console.WriteLine(l);
						lmax=Math.Max(lmax,l);
					}
					cnt*=lmax;
				}
				if(i==(int)('o'-'a')){
					// nC1*mC1 n+m=rest+2のMaxを求める
					long rest=(long)(A[i]-B[i]);
					if(rest<0){
						cnt*=0;
						break;
					}
					long lmax=-1;
					for(long j=0;j<=rest;j++){
						long l=(1+j);
						l*=(1+rest-j);
						lmax=Math.Max(lmax,l);
					}
					cnt*=lmax;
				}
			}
		}
		
		
		Console.WriteLine(cnt);
		
		
	}
	int[] A;
	public Sol(){
		A=new int[26];
		for(int i=0;i<26;i++){
			A[i]=ri();
		}
	}




	static String rs(){return Console.ReadLine();}
	static int ri(){return int.Parse(Console.ReadLine());}
	static long rl(){return long.Parse(Console.ReadLine());}
	static double rd(){return double.Parse(Console.ReadLine());}
	static String[] rsa(){return Console.ReadLine().Split(' ');}
	static int[] ria(){return Array.ConvertAll(Console.ReadLine().Split(' '),e=>int.Parse(e));}
	static long[] rla(){return Array.ConvertAll(Console.ReadLine().Split(' '),e=>long.Parse(e));}
	static double[] rda(){return Array.ConvertAll(Console.ReadLine().Split(' '),e=>double.Parse(e));}
}