Problem Description

Takahashi, an agent of the TK country, received a certain positive integer \( X \) from Aoki.

However, it turns out that Aoki is a spy from the AO country and gave Takahashi the number that should have been passed raised to the power of 4.

That is, if the original positive integer to be passed is \( N \), then \( X = N^4 \).

Takahashi is very skilled and figured this out, but he is not good at calculations and does not know what the original positive integer, i.e., \( N \), was.

So, please find \( N \) for him.

Input Format

The input is given from the standard input in the following format:

\( X \)

Output Format

Output \( N \) in one line.

Sample Input and Output

Sample Input #1

1

Sample Output #1

1

Sample Input #2

981506241

Sample Output #2

177

Sample Input #3

390625

Sample Output #3

25

Notes/Hints

Constraints

• \( 1 \leq X \leq 10^9 \)
• There exists exactly one \( N \) such that \( X = N^4 \)

见题面 Input 部分

见题面 Output 部分