#include<stdio.h>
#include<math.h>
void main()
{
	int a[10000],n,s,i,j;
	scanf("%d",&n);
	for(i=0;i<n;i++)
		scanf("%d",&a[i]);
	for(i=0,s=0;i<n;i++)
	{
		for(j=i+1;j<n;j++)
			s=s+2*abs(a[i]-a[j]);
	}
	printf("%d\n",s);
}

• Re:why wrong 指点一下 (268) SongLijun 2009-03-09 10:32:16
• Re:why wrong 指点一下 (34) jhyoon1234 2009-03-27 17:37:56