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。
Veronica Viera, the company's payload operations lead, shows us an image that the satellite beamed back from space.
，这一点在旺商聊官方下载中也有详细论述
"I actually started on the [free] GarageBand app on the iPad - and although you might be insecure about your first three or four beats, I genuinely think that if you have a phone, you have a potential career in music."
坚持精准方略，找对路子，让发展成为消除贫困最有效的办法。
# Switch to agent mode