fork download 
  1. #include <iostream>
  2. #include<bits/stdc++.h>
  3. using namespace std;
  4.  
  5. int main() {
  6. 	int n;
  7. 	cin>>n;
  8. 	vector<int> arr(n);
  9. 	for(int i = 0 ; i < n ; i++)cin>>arr[i];
  10.  
  11. 	int q;
  12. 	cin>>q;
  13. 	vector<int> query(q);
  14. 	for(int i = 0 ; i < q; i++) cin>>query[i];
  15.  
  16. 	vector<int> hashArr(n,0);
  17. 	for(int i = 0 ; i < n ; i++){
  18. 		hashArr[arr[i]]++;
  19. 	}
  20.  
  21. 	for(int i = 0 ; i < q ; i++){
  22. 		cout<<query[i]<<" -> "<<hashArr[query[i]]<<endl;
  23. 	}
  24.  
  25. 	return 0;
  26. }
Success #stdin #stdout 0.01s 5328KB
comments (?)
stdin 
5 
5 3 2 1 5
3
1 3 5
stdout 
1 -> 1
3 -> 1
5 -> 2
https://ideone.com/3oUGaG
language:
C++ (gcc 8.3)
created:
9 days ago
visibility:
public

Share or Embed source code

Discover > Sphere Engine API

The brand new service which powers Ideone!

Discover > IDE Widget

Widget for compiling and running the source code in a web browser!