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  1. #include <bits/stdc++.h>
  2. using namespace std;
  3.  
  4. int main() {
  5. 	int t; cin >> t;
  6. 	int a[2000];
  7. 	while(t--){
  8. 		int n; cin >> n;
  9. 		int od = -1, od2 = -1, flg = -1;
  10. 		for(int i = 0; i < n; i++){
  11. 			cin >> a[i];
  12. 			if(a[i] % 2 == 0){
  13. 				flg = i;
  14. 			}
  15. 			if(a[i] % 2 == 1 && od != -1) od2 = i;
  16. 			if(a[i] % 2 == 1 && od == -1) od = i;
  17. 		}
  18. 		if(flg != -1){
  19. 			cout << 1 << endl << a[flg] << endl;
  20. 			continue;
  21. 		}
  22. 		else if(od != -1 && od2 != -1){
  23. 			cout <<2 << endl << a[od] << " " << a[od2] << endl;
  24. 			continue;
  25. 		}
  26. 		else cout << -1 << endl;
  27.  
  28.  
  29. 	}
  30.  
  31. 	return 0;
  32. }
Success #stdin #stdout 0.01s 5304KB
comments (?)
stdin 
3
3
1 3 5
1
3
2
1 1
stdout 
2
1 5
-1
2
1 1
https://ideone.com/47YhLP
language:
C++14 (gcc 8.3)
created:
3 days ago
visibility:
public

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