说明

大家好，我是出题人，这是签到题。

祝大家顺利！

Hooray! It is maybe the first time that Tiangong University holds an Summer Camp Selection contest. Suppose that everything goes on well and the Summer Camp Selectionl Contest is held each year. In which year will thexxx-th Summer Camp Selectionl Contest be held?

输入格式

The first and only line of input contains a single integerx(1≤x≤1e15)

输出格式

Output a single integer, denoting the year when thexxx-th Summer Camp Selectionl Contestwill be held.

样例

1

2021

样例

30

2050

提示

Note that it is the year 2021 right now.

It maybe last forever.