P24278 [AtCoder] Exponential or Quadratic
入门
题目描述

Problem Statement

Does $2^n \gt n^2$ hold?

Input

Input is given from Standard Input in the following format:
n

Output

If $2^n \gt n^2$, print Yes; otherwise, print No.

Constraints

  • n is an integer between 1 and 10^9 (inclusive).

Sample Input 1

5

Sample Output 1

Yes

Since 2^5=32,\ 5^2=25, we have $2^n \gt n^2$, so Yes should be printed.

Sample Input 2

2

Sample Output 2

No

For n=2, we have 2^n=n^2=2^2, so $2^n \gt n^2$ does not hold. Thus, No should be printed.

Sample Input 3

623947744

Sample Output 3

Yes

输入格式

见题面 Input 部分

输出格式

见题面 Output 部分

样例输入
5
样例输出
Yes