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  1. #include <iostream>
  2. #include<vector>
  3. using namespace std;
  4.  
  5. int main() {
  6. 	vector<int> nums={1,3,4,5,8};
  7. 	int st=0;
  8. 	int end=nums.size()-1;
  9. 	int count=0;
  10. 	int k=5;
  11.  
  12. 	while(st<end) {
  13. 		if(nums[st]+nums[end]>k) {
  14. 			count+=end-st;
  15. 			end--;
  16. 		}
  17. 		else {
  18. 			st++;
  19. 		}
  20. 	}
  21.  
  22. 	cout<<count<<endl;
  23.  
  24. 	return 0;
  25. }
Success #stdin #stdout 0.01s 5292KB
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Standard input is empty
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8
https://ideone.com/gqR8Ih
language:
C++14 (gcc 8.3)
created:
18 hours ago
visibility:
public

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