bool judgeSquareSum(int c) {

    int h = pow(c, 0.5);

    for (int i = ; i <= h; i++)

    {

        double left = pow(c - pow(i, ), 0.5);

        if (left - int(left) == 0.0)

        {

            return true;

        }

    }

    return false;

}

 class Solution:

     def judgeSquareSum(self, c: int) -> bool:

         i=0

         j=int(c ** 0.5)

         while i<=j:

             target = i*i +j*j

             if target==c:

                 return True

             elif target>c:

                 j-=1

             else:

                 i+=1

         return False