Is Perfect Square
Check whether a number is a perfect square.
Input format
One line with a single integer N (N >= 0).
Output format
Print true if N is a perfect square (0, 1, 4, 9, 16, ...), otherwise false.
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
trueExample 2
Input
1Expected output
true