idfumg

class MedianPQ:
    def __init__(self):
        self.left = []  # left part of an array (max heap)
        self.right = []  # right part of an array (min heap)
        self.removed = collections.defaultdict(int)  # lazy removal
        self.balance = 0

    def add(self, val):
        if not self.left or val <= -self.left[0]:
            heapq.heappush(self.left, -val)

idfumg

import collections
import functools

COMMANDS = {
    "clone": lambda: print("clone processed"),
    "init": lambda: print("init processed"),
    "add": lambda: print("add processed"),
    "mv": lambda: print("mv processed"),
    "restore": lambda: print("restore processed"),
    "rm": lambda: print("rm processed"),

idfumg

class Solution:
    def maxProfit(self, nums: List[int]) -> int:
        return sol8(nums)

def sol1(nums):
    N = len(nums)
    INF = 10**10

    @cache
    def run(idx, taken):

idfumg

static int INF = 1e9+7;
static int cache[100001][2];

static int run(int idx, int taken, vector<int>& nums) {
    const int N = size(nums);
    if (idx == N and taken == 1) return -INF;
    if (idx == N) return 0;
    if (cache[idx][taken] != -1) return cache[idx][taken];
    if (taken) return cache[idx][taken] = max(
        run(idx + 1, 1, nums),

idfumg

static int INF = 1e9+7;
static int N = 0;
static vector<int> nums;
static int cache[100001][2];

static void init(vector<int>& prices) {
    N = size(prices);
    nums.resize(N);
    for (int i = 0; i < N; ++i) {
        nums[i] = prices[i];

idfumg

const (
    INF = int(1e9)
)

var (
    cache [100001][2]int
    nums [100001]int
    N int
)

idfumg

const (
    INF = int(1e9)
)

var (
    cache [100001][2]int
)

func maxProfit(nums []int) int {
    initCache(len(nums), -1)

idfumg

const (
    INF = int(1e9)
)

func maxProfit(prices []int) int {
    cache := createCache(len(prices), -1)
    return run(0, 0, prices, cache)
}

func createCache[T any](N int, val T) [][]T {

idfumg

[Connection]

brew install pgcli
pgcli -h localhost -p 5432 -U postgres isolation_levels # password postgres

[Preparation]

DROP TABLE IF EXISTS accounts;
CREATE TABLE accounts (
    id SERIAL PRIMARY KEY,

idfumg

version: '3'

services:

  postgres:
    image: 'postgres:14.5'
    container_name: "postgres_isolation"
    restart: always
    environment:
      - POSTGRES_DB=isolation_levels