gradha

#!/bin/bash
sudo add-apt-repository ppa:chris-lea/libsodium;
sudo echo "deb http://ppa.launchpad.net/chris-lea/libsodium/ubuntu trusty main" >> /etc/apt/sources.list;
sudo echo "deb-src http://ppa.launchpad.net/chris-lea/libsodium/ubuntu trusty main" >> /etc/apt/sources.list;
sudo apt-get update && sudo apt-get install libsodium-dev;

gradha

type
  TNode = object
    id: int
    child_l: PNode
    child_r: PNode

  PNode = ref TNode

var 
  counter = 0