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只能是--int64#include <stdio.h>
#include <math.h>
#define L 10000
int num[L];
int main()
{
int i,j,n;
__int64 sum;
scanf("%d",&n);
for(i=0;i<n;i++)
scanf("%d",&num[i]);
sum=0;
for(i=0;i<n;i++)
for(j=i+1;j<n;j++)
sum+=abs(num[i]-num[j]);
printf("%I64d\n",sum*2);
return 1;
}
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