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  1. #include <bits/stdc++.h>
  2. using namespace std;
  3.  
  4. int main() {
  5. 	int n; cin >> n;
  6. 	vector<int> arr(n);
  7. 	for(int i  =0; i < n; i++)
  8. 	cin >> arr[i];
  9. 	int k; cin >> k;
  10.  
  11. 	unordered_map<int,int> mp;
  12. 	int ans = INT_MAX;
  13. 	for(int i = 0; i < n; i++){
  14. 		int req = k-arr[i];
  15. 		if(mp.find(req) != mp.end()){
  16. 			int dist = i-mp[req];
  17. 			ans = min(ans, dist);
  18. 		}
  19. 		mp[arr[i]] = i;
  20. 	}
  21. 	cout << ans+1;
  22. 	return 0;
  23. }
Success #stdin #stdout 0.01s 5324KB
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https://ideone.com/FgSz6L
language:
C++14 (gcc 8.3)
created:
9 hours ago
visibility:
public

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