#instruction#
# ########## #
#Example#
from typing import List


def has_similar_word_lengths(words: List[str], threshold: int) -> bool:
    """
    Check if in the given list of words, are any two words whose length difference is less than or equal to the given threshold.
    >>> has_similar_word_lengths(["hello", "world", "hi", "python"], 2)
    True
    >>> has_similar_word_lengths(["chat", "learning", "ai"], 1)
    False
    """
    for i in range(len(words)):
        for j in range(i + 1, len(words)):
            if abs(len(words[i]) - len(words[j])) <= threshold:
                return True
    return False

---

def find_smallest_divisor(n: int) -> int:
    """
    Return the smallest divisor of n greater than 1. Assume n > 1.
    >>> find_smallest_divisor(15)
    3
    >>> find_smallest_divisor(37)
    37
    """
    for i in range(2, n + 1):
        if n % i == 0:
            return i
    return n

---

def last_digit_sum(a: int, b: int) -> int:
    """
    Complete the function that takes two integers and returns the sum of their last digits.
    Assume the input is always valid.

    Examples:
    last_digit_sum(123, 453) should return 6 (3 + 3).
    last_digit_sum(789, 10) should return 9 (9 + 0).
    last_digit_sum(100, 27) should return 7 (0 + 7).
    last_digit_sum(25, -31) should return 6 (5 + 1).
    """
    return abs(a % 10) + abs(b % 10)

---

# ########## #
#Question#
{question}
# ########## #
#Answer Format#
code
# ########## #