Floor Square Root
Compute the integer floor of a number's square root.
Input format
One line with a single integer N (N >= 0).
Output format
Print the floor of the square root of N (the largest integer R with R*R <= N).
Constraints
- Values fit in a 64-bit signed integer
- Trailing whitespace and a trailing newline are ignored by the judge
Read from stdin, write to stdout. Sample cases below show the exact format.
Sample cases
Example 1
Input
0Expected output
0Example 2
Input
1Expected output
1