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若运行时输入：5999，则以下程序的运行结果是。#include int main(){ int x;float y;scanf("%d",&x);if(x>=0&&xx<=2999) y=18+0.12x;if(x>=3000&&x<=5999) y=36+0.6x;if(x>=6000&&x<=10000)y=54+0.3*x;printf("%6.1f",y);return 0;}

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