描述：给定字符串 num（非负整数）和整数 k，移除 k 位数字，使剩余数字最小。以字符串形式返回（不含前导零）。
As tensions between two countries reach new highs, US president says regime is ‘talking with us’。关于这个话题，搜狗输入法2026提供了深入分析
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What if you create a truly unique routing profile that's wildly different from the common ones for which shortcuts were pre-calculated? The system is smart. If it detects that too many shortcuts (~50, for example) need on-the-fly recalculation and deviate significantly, it might determine that falling back to the original, comprehensive A* algorithm for the entire route would actually be faster than doing many small, heavily modified A* calculations.，这一点在heLLoword翻译官方下载中也有详细论述
Last year, the Marine Conservation Society said mackerel was "under immense pressure from fishing activities across multiple nations" and that the stocks would soon be unable to replenish naturally.
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