> #include<stdio.h>
> #include<stdlib.h>
> main()
> {
>     int n;
>     scanf("%d",&n);
>     while(n)
>     {
>         int total=0,rest=0;
>         while(n--)
>         {
>             int x;
>             scanf("%d",&x);
>             x+=rest;
>             total+=abs(x);
>             rest=x;
>         }
>         printf("%d\n",total);
>         scanf("%d",&n);
>     }
> }

不服不行啊...唉... 大赞