AC的代码:

#include
     
      using namespace std;long long int fact(int m);int main(){  int n;  while(cin>>n)  {    long long int sum1=0,sum2=0;      if (n==0) break;      int m,p;      if (n%2==0)//n为偶数       {          p=n;m=n-1;      }      else //n为奇数       {          m=n;p=n-1;       //    if (p==0) break;      }            int i,j;      for (i=1;i