solution.py

# A square of squares
# You like building blocks. You especially like building blocks that are squares.
# And what you even like more, is to arrange them into a square of square building blocks!

# However, sometimes, you can't arrange them into a square.
# 'Instead, you end up with an ordinary rectangle! Those blasted things!
# If you just had a way to know, whether you're currently working in vain… Wait!
# That's it! You just have to check if your number of building blocks is a perfect square.

# Task
# Given an integral number, determine if it's a square number:

# In mathematics, a square number or perfect square is an integer that is the square of an integer;
# in other words, it is the product of some integer with itself.
# The tests will always use some integral number, so don't worry about that in dynamic typed languages.

# Examples
# isSquare(-1) returns  false
# isSquare(0) returns   true
# isSquare(3) returns   false
# isSquare(4) returns   true
# isSquare(25) returns  true
# isSquare(26) returns  false
import math


def is_square(n):
    if n < 0:
        return False

    return math.sqrt(n) - int(math.sqrt(n)) == 0