QOJ.ac

QOJ

Límite de tiempo: 1.0 s Límite de memoria: 32 MB Puntuación total: 20

#17103. CRNE

Estadísticas

Mirko 兴高采烈地带着他那套崭新的、完整的棋子冲到 Slavko 家,却发现 Slavko 也在自家的阁楼里找到了一套棋子。神奇的是,Slavko 的棋子全都是黑色的。不过,既然他们两个人都不会下国际象棋,他们便决定用棋盘互相猛击对方。

当 Slavko 正在做一系列拉伸运动进行热身时,Mirko 决定对 Slavko 的棋盘进行破坏。作为一名木雕专家,他决定切开 Slavko 的棋盘,使得当 Slavko 试图用它击打 Mirko 时,棋盘会碎成尽可能多的碎片。

Mirko 只能进行水平和垂直方向的切割(平行于棋盘的边缘),且必须从一端切到另一端。他最多有时间进行 $N$ 次切割。

输入格式

输入的第一行包含一个整数 $N$ ($1 \le N \le 100$),表示 Mirko 最多可以进行的切割次数。

输出格式

输出 Slavko 的棋盘最多可以碎裂成的碎片数量。

样例

输入样例 1

1

输出样例 1

2

输入样例 2

3

输出样例 2

6

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