fork download
copy 
  1. #include <bits/stdc++.h>
  2. using namespace std;
  3. const int maxn=1e6+14;
  4. int n,m;
  5. map < int , int > mp;
  6. void solve(){
  7. 	cin >> n >> m;
  8. 	for (int i = 1; i <= n; i++) {
  9. 		int x;
  10. 		cin >> x;
  11. 		mp[x] = i;
  12. 	}
  13.  
  14. 	for (int i = 1; i <= m; i++){
  15. 		int x;
  16. 		cin >> x;
  17. 		if (!mp[x]) {
  18. 			cout << -1 << '\n';
  19. 		}
  20. 		else cout << mp[x] << '\n';
  21. 	}
  22. }
  23. int main(){
  24. 	ios_base::sync_with_stdio(0);
  25. 	cin.tie(0);    cout.tie(0);
  26. 	if (fopen("input.txt","r")){
  27. 		freopen("input.txt","r",stdin);
  28. 		freopen("output.txt","w",stdout);
  29. 	}
  30. 	solve();
  31. 	return 0;
  32. }
  33.  
Success #stdin #stdout 0.01s 5284KB
comments (?)
stdin
copy 
Standard input is empty
stdout
copy 
Standard output is empty
https://ideone.com/4GxZaz
language:
C++14 (gcc 8.3)
created:
26 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!