from typing import List


class Solution:
    def lengthOfLIS(self, nums: List[int]) -> int:
        if len(nums) == 0:
            return 0
        dp = [1] * len(nums)
        for i, n in enumerate(nums):
            for j in range(0, i):
                if nums[j] < nums[i]:
                    dp[i] = max(dp[i], dp[j] + 1)
        return max(dp)