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  1. #include <bits/stdc++.h>
  2. using namespace std;
  3.  
  4. int main() {
  5. 	int q; cin>>q; // no of queries
  6. 	vector<int> v;
  7.  
  8. 	int op, x;
  9. 	for(int i=0; i<q; i++){
  10. 		cin >> op; // 0-push_back   1-print   2-pop_back
  11. 		switch(op){
  12. 			case 0:
  13. 				cin >> x;
  14. 				v.push_back(x);
  15. 				break;
  16. 			case 1:
  17. 				cin >> x;
  18. 				cout << v[x] << "\n";
  19. 				break;
  20. 			case 2:
  21. 				v.pop_back();
  22. 				break;
  23. 		}
  24. 	}
  25.  
  26. 	return 0;
  27. }
Success #stdin #stdout 0s 4320KB
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stdin
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8
0 1
0 2
0 3
2
0 4
1 0
1 1
1 2
stdout
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1
2
4
https://ideone.com/jM3wEy
language:
C++ (gcc 8.3)
created:
3 years ago
visibility:
public

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