(n)
return int(gmpy2.isqrt(n))
return the integer square root of N
return the integer square root of N
return the integer square root of N
def isqrt(n):
    """ return the integer square root of N """

    return int(gmpy2.isqrt(n))
def isqrt ( n ) : return int ( gmpy2 . isqrt ( n ) )