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一个小问题,求一个答案for(int i=0; i<sqrt(k); i++); 这种语句i没加1一次,是否都计算一次sqrt(k)呢? 如果是,是否我改成for(int i=0, t=sqrt(k); i<t; i++); 会节约点时间 还是不同的情况做不同处理? Followed by:
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