思路：单调递增栈 + k 控制删除次数。高位越小整体越小，遇更小数字时弹出栈顶大数（仅当 k0）；栈空且当前为 0 则跳过（避免前导零）；若遍历完 k 仍0，从末尾再删 k 位。
As we get ready for his imminent new album Kiss All The Time, Disco Occasionally out on March 6, Harry chats nonsense with Brittany about dating app Raya, his ability to consume impressively large volumes of yoghurt, how he prepped for the possibility of peeing himself during running, the weird interior design choices he made in his early days of home ownership (statue of Jesus wearing boxing gloves loool), and his unexpected love for watching old episodes of Supernanny when he can't sleep.
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"But you need an oil price that makes that worthwhile. Unless you can generate sufficient money to justify that, it's very difficult to see the industry coming back."
Simpler Recycling legislation will make weekly food waste collections mandatory across England