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    "https://leetcode.com/problems/implement-queue-using-stacks\n",
    "\n",
    "\n",
    "\n",
    "Runtime: 32 ms, faster than 46.77% of Python3 online submissions for Implement Queue using Stacks.\n",
    "Memory Usage: 14.1 MB, less than 63.47% of Python3 online submissions for Implement Queue using Stacks.\n",
    "\n",
    "\n",
    "\n",
    "```python\n",
    "class MyQueue:\n",
    "\n",
    "    def __init__(self):\n",
    "        \"\"\"\n",
    "        Initialize your data structure here.\n",
    "        \"\"\"\n",
    "        self.queue = []\n",
    "        \n",
    "\n",
    "    def push(self, x: int) -> None:\n",
    "        \"\"\"\n",
    "        Push element x to the back of queue.\n",
    "        \"\"\"\n",
    "        self.queue.append(x)\n",
    "        \n",
    "\n",
    "    def pop(self) -> int:\n",
    "        \"\"\"\n",
    "        Removes the element from in front of queue and returns that element.\n",
    "        \"\"\"\n",
    "        r = self.queue[0]\n",
    "        self.queue = self.queue[1:]\n",
    "        return r\n",
    "        \n",
    "\n",
    "    def peek(self) -> int:\n",
    "        \"\"\"\n",
    "        Get the front element.\n",
    "        \"\"\"\n",
    "        return self.queue[0]\n",
    "        \n",
    "\n",
    "    def empty(self) -> bool:\n",
    "        \"\"\"\n",
    "        Returns whether the queue is empty.\n",
    "        \"\"\"\n",
    "        return len(self.queue) == 0\n",
    "```\n",
    "\n",
    "\n",
    "Spent one minute\n",
    "\n",
    "One shoot"
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