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package leetcode;

public class BinaryTreeTilt {

int res=0;

public static void main(String[] args) {

BinaryTreeTilt test = new BinaryTreeTilt();

TreeNode t = new TreeNode(1);

t.left = new TreeNode(2);

t.right = new TreeNode(3);

t.left.left = new TreeNode(6);

t.left.right= new TreeNode(4);

System.out.println(test.findTilt(t));

}

public int findTilt(TreeNode root) {

sumfindTilt(root);

return res;

}

public int sumfindTilt(TreeNode root){

if(root==null) return 0;

int l= sumfindTilt(root.left);

int r= sumfindTilt(root.right);

res= res + Math.abs(l-r);

return l+r+root.val;

}

}