* @param {string} num 非负整数的字符串形式（可能含前导零）
调试技巧：加打印语句观察每轮变化
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特朗普國情咨文報告事實查核：失業率、物價、戰爭調停及其它
Footage from local media showed people rushing to collect banknotes while police in riot gear tried to disperse them using teargas. Authorities were later seen setting the money alight in a bonfire at the scene of the crash.
Wu-Tang Clan's nomination comes after Gene Simmons from veteran rock band Kiss recently criticised the inclusion of hip-hop artists, saying they don't "belong" in the Hall of Fame.