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  1. #include <iostream>
  2. #include<bits/stdc++.h>
  3. using namespace std;
  4.  
  5. int main() {
  6. 	int n ; cin>>n;
  7. 	vector<int>arr(n);
  8. 	for(int i = 0 ; i<n;i++) cin>>arr[i];
  9. 	unordered_map<int,int>hash;
  10. 	int sum = 0 ; int max_sum =INT_MIN;
  11. 	for(int i = 0 ; i<n;i++){
  12. 		hash[arr[i]-i]+=arr[i];
  13. 		max_sum= max(hash[arr[i]-i],max_sum);
  14. 	}
  15. 	cout<<max_sum;
  16.  
  17. 	// your code goes here
  18. 	return 0;
  19. }
Success #stdin #stdout 0.01s 5320KB
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https://ideone.com/vyRByj
language:
C++ (gcc 8.3)
created:
21 hours ago
visibility:
public

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