shortest

Given a square S, output the square-root of S.

Input

The first and only line will contain an integer S (1 ≤ S ≤ 3.14159265 * 10100).

Output

On the first and only line write the integer √S.

Sample Input 1

121

Sample Output 1

11

Submitting .cpp to 'shortest'


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Time Limit: 1 Seconds
Memory Limit: 1024MB
Your best score: 0
Source: Dunjudge Archive

Subtask Score
1 100
2 0