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。
他们不再满足于“打卡式”的短途游，愿意为独特的航线、更长的航程和更精致的船上体验支付溢价。这也是还在坚持深耕中国邮轮市场的船公司最想看到的。
，这一点在51吃瓜中也有详细论述
The real challenge was managing the economics while bootstrapping the business without investors. Figuring out how much to invest in marketing versus distribution and how to approach retailers without overspending. Balancing growth with limited resources forced me to prioritize, experiment and get creative with every dollar.
Москвичей предупредили о резком похолодании09:45