#include <stdio.h>

int main()
    {
        int i = 0;
        int n = 0;
        int ret = 1;
        int sum = 0;
        for(n=1;n<=10;n++)
        {
            ret = 1;
            for(i=1;i<=n;i++)
            {
                ret = ret * i;
            }
            sum =
 
 sum + ret;
        }
        printf("%d\n",sum);
        return 0;
    }

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