#include<cstdio>
#include<algorithm>
using namespace std;
int main(){
	int n,a[10000];
	while (scanf("%d", &n) != EOF){
		if (n == 0){
			break;
		}
		for (int i = 0; i < n; i++){
			scanf("%d", &a[i]);
		}
		sort(a, a + n);
		int sum = 0;
		for (int i = 1; i < n; i++){
			a[i] = a[i] + a[i - 1];
			sum = sum + a[i];
			sort(a + i, a + n);
		}
		printf("%d\n", sum);
	}
}