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Feb 24th, 2020
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  1. #include <bits/stdc++.h>
  2. using namespace std;
  3. int main()
  4. {
  5. int n, x, m=0, z=0;
  6. vector <int> a;
  7. cin>>n;
  8. for(int i=0; i<n*2; i++) cin>>a[i];
  9. sort(a.begin(),a.end());
  10. for(int i=0; i<n; i++)
  11. {
  12. m=m+a[i];
  13. }
  14. for(int i=n; i<n*2; i++)
  15. {
  16. z=z+a[i];
  17. }
  18. if(m!=z) for(int i=0; i<n; i++) cout<<a[i]<<" ";
  19. else cout<<"-1";
  20. return 0;
  21. }
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