#
# 代码中的类名、方法名、参数名已经指定，请勿修改，直接返回方法规定的值即可
#
# 
# @param c int整型 
# @return bool布尔型
#
class Solution:

    def square(self , c: int) -> bool:
        # write code here

        set1 = {2}
        flag = False
        for i in range(1,int(c**0.5)+1):
            set1.add(i**2)
            if (c - i**2) in set1:
                flag = True
        return flag