T534991 秦始皇的忏悔【极限时间】（Qin Shi 's Confession 【Time limited】）

这是**极限时间**题单中的一题。 ##### This is one of the questions in the Limit Time Question List.

秦始皇：唉！我做了那么多对不起大家的事~ 秦始皇在干坏事的时候突然改过自新了，给出一个**自然数**$n$,代表他干过的坏事，然后，为表诚意，他需要缴纳$s$元的税来弥补**其中一件事**。 ##### Qin Shi Huang: Alas! I've done so many things I'm sorry for everyone~ ##### Qin Shi Huang suddenly reformed himself when he did bad things, giving a natural number n, which represents the bad things he had done, and then, in order to show his sincerity, he needed to pay a tax of S yuan to make up for one of the things.

输入一个数$n$,代表一共有多少件坏事。（$0\leqslant n

一个数，代表秦始皇一共要交的税。 ##### A number represents the total amount of taxes that Qin Shi Huang had to pay.

请注意**时间限制**。 ##### Please be aware of the time limit.