Immigration boosts innovation and wages in the US. The positive dynamic impact of immigration on innovation and wages dominates the short-run negative impact of increased labor supply. Increased immigration to the US since 1965 is estimated to have increased innovation and wages by 5%.
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可，随着大家进入智能机时代，这种洒脱终结了。
// 易错点1：边界处理 - 0辆车返回0，1辆车返回1（无需后续计算）