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Mar 30th, 2020
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  1. #include<iostream>
  2. #include<algorithm>
  3. using namespace std;
  4. int main(){
  5. int n;
  6. cin >> n;
  7. long long *a = new long long ;
  8. for(int i=0;i<n;i++){
  9. cin >> a[i];
  10. }
  11. sort(a,a+n);
  12. for(int i=0;i<n-2;i++){
  13. for(int j=i+1;j<n-1;j++){
  14. for(int q=j+1;q<n;q++){
  15. if(a[i]+a[q]+a[j]==0) cout << a[i] << ' ' << a[j] << ' ' << a[q] << endl;
  16. while(i<n-2 && a[i]==a[i+1]) i++;
  17. while(j<n-1 && a[j]==a[j+1]) j++;
  18. while(q<n && a[q]==a[q+1]) q++;
  19. }
  20. }
  21. }
  22. }
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