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  1. #include <bits/stdc++.h>
  2. using namespace std;
  3.  
  4. void hhh() {
  5. 	ios_base::sync_with_stdio(0);
  6. 	cin.tie(0);
  7. }
  8.  
  9. typedef long long ll;
  10.  
  11. int main() {
  12. 	hhh();
  13. 	int n ;
  14. 	cin >> n ;
  15. 	unordered_set <int > ms;
  16. 	for( int i = 0 ; i < n ; i ++) {
  17. 		int x ;
  18. 		cin >>  x ;
  19. 		ms.insert( x );
  20. 	}
  21. 	int q ;
  22. 	cin >> q ;
  23. 	while( q-- ) {
  24. 		int val ;
  25. 		cin >> val ;
  26. 		bool fl = 0 ;
  27. 		int st = 1 ;
  28. 		for( auto it = ms.begin(); it != ms.end() ; it++) {
  29. 			if( *it == val ) {
  30. 				int idx = distance (ms.begin(), it ) +1 ;
  31. 				ms.erase(it); // neu dung erase val se xao het tat ca trong val
  32. 				cout << st  <<"\n";
  33. 				fl = 1 ;
  34. 				break;
  35. 			}
  36. 			++st;
  37. 		}
  38. 		if( ! fl) cout <<"-1\n";
  39.  
  40. 	}
  41.  
  42.  
  43. }
  44.  
Success #stdin #stdout 0s 5312KB
comments (?)
stdin
copy 
7
3 1 2 3 2 1 1
7
3
2
1
3
1
2
3
stdout
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2
1
1
-1
-1
-1
-1
https://ideone.com/LNTlwY
language:
C++ (gcc 8.3)
created:
3 days ago
visibility:
public

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