//阶乘计算函数 long sum (long k){ long sum=i; for(long i=1;i<=k;i++){ sum=sum*i; //实现阶乘 } return sum; }
//阶乘计算函数 long sum (long k){ long sum=i; for(long i=1;i<=k;i++){ sum=sum*i; //实现阶乘 } return sum; }
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