var nCr = function(n,r){
  if(n < r) return 0;
  r = Math.min(r,n-r);
  var ret = 1;
  for(var i=0;i<r;i++){
    ret *= (n-i);
    ret /= i+1;
  }
  return ret;
};


var solve = function(input){
  var ints = input.split("\n").map(parseInt);
  var helloworld = "helloworld";
  var checked = Object.create(null);

  var ans = 1;
  for(var i=0;i<helloworld.length;i++){
    if(checked[helloworld[i]]) continue;
    checked[helloworld[i]] = true;
    var cnt = 0;
    for(var j=0;j<helloworld.length;j++){
      if(helloworld[j] == helloworld[i]) cnt++;
    }
    ans *= nCr(ints[helloworld.charCodeAt(i) - 'a'.charCodeAt(0)]);
  }
  console.log(ans);
};

solve(require("fs").readFileSync("/dev/stdin","utf8"));