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/* The Great Computer Language Shootout
http://shootout.alioth.debian.org/
contributed by Isaac Gouy */
function TreeNode(left,right,item){
this.left = left;
this.right = right;
this.item = item;
}
TreeNode.prototype.itemCheck = function(){
if (this.left==null) return this.item;
else return this.item + this.left.itemCheck() - this.right.itemCheck();
}
function bottomUpTree(item,depth){
if (depth>0){
return new TreeNode(
bottomUpTree(2*item-1, depth-1)
,bottomUpTree(2*item, depth-1)
,item
);
}
else {
return new TreeNode(null,null,item);
}
}
var ret;
for ( var n = 4; n <= 7; n += 1 ) {
var minDepth = 4;
var maxDepth = Math.max(minDepth + 2, n);
var stretchDepth = maxDepth + 1;
var check = bottomUpTree(0,stretchDepth).itemCheck();
var longLivedTree = bottomUpTree(0,maxDepth);
for (var depth=minDepth; depth<=maxDepth; depth+=2){
var iterations = 1 << (maxDepth - depth + minDepth);
check = 0;
for (var i=1; i<=iterations; i++){
check += bottomUpTree(i,depth).itemCheck();
check += bottomUpTree(-i,depth).itemCheck();
}
}
ret = longLivedTree.itemCheck();
}
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