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- #include <bits/stdc++.h>
- using namespace std;
- int main()
- {
- int n, x, m=0, z=0;
- vector <int> a;
- cin>>n;
- for(int i=0; i<n*2; i++) cin>>a[i];
- sort(a.begin(),a.end());
- for(int i=0; i<n; i++)
- {
- m=m+a[i];
- }
- for(int i=n; i<n*2; i++)
- {
- z=z+a[i];
- }
- if(m!=z) for(int i=0; i<n; i++) cout<<a[i]<<" ";
- else cout<<"-1";
- return 0;
- }
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