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#include<iostream>
#include<cmath>
#include<algorithm>
#include<string>
using namespace std;
int main()
{
int n, index = 1, sum;
while (cin >> n) {
sum = 0;
int arr[1001];
for (int i = 0;i < n;i++) {
cin >> arr[i];
}
sort(arr, arr + n);
for (int i = 0;i < n;i++) {
for (int j = i + 1;j < n;j++) {
index = 1;
int num = arr[i];
 ...
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