// DFS solution
var goodNodes = function(root, max = root.val) {
    let output = 0
    // Only add to output if we meet the condition
    if(root.val >= max) output++
    // Increase the max if we encounter a val greater than max
    max = Math.max(Math.max(root.val, max))
    // Traverse the tree to compare more nodes
    if(root.left) output += goodNodes(root.left, max)
    if(root.right) output += goodNodes(root.right, max)

    return output   
};