小明刚刚毕业，成功入职一家国际大公司。这家公司人员结构很复杂，一共有n个岗位。岗位名称用数字表示，不一定连续。这些岗位组成了公司的组织结构树。但是由于公司历史悠久，岗位变动较大，岗位命名混乱。公司希望小明对公司岗位名称进行调整，要求数字越小代表的岗位重要度越高（组织结构不变，只是代表岗位的相应数字调整，详细见示例）。其中，树形结构上端的数字比下端的数字小，同一层左面的比右面的小。对于每一个职位，仅可以管理它的直属下级即孩子结点。

　　同时公司希望小明在管理方面能得到更多的锻炼，以便将来负责公司高层工作。对小明岗位的要求是：需要是公司组织架构中(重新设计后的公司组织架构)，直接管的人最多的岗位。请你帮小明做出正确的岗位选择。

-Xiao Ming just graduated successfully recruited a large international companies. The company staff structure is very complex, a total of n jobs. Job Title expressed numerically, not necessarily consecutive. These positions make up the company' s organizational structure tree. However, because the company has a long history, large changes jobs, job name confusion. Xiao Ming hopes to post the name of the company to adjust the requirements of the smaller the number, the higher the degree of importance on behalf of the post (organizational structure unchanged, but on behalf of the corresponding figure for the adjustment positions, see detailed examples). Wherein the digital tree structure than the upper end of the lower end of the small numbers, with little left than the right one. For each job, you can only manage its immediate subordinates that child nodes. The company hopes Xiao Ming in the management to get more exercise, company executives responsible for future work. Xiao Ming on