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  1. #include <bits/stdc++.h>
  2. using namespace std;
  3.  
  4. int main() {
  5. 	int n, k;
  6. 	cin >> n >> k;
  7. 	vector<int> a(n);
  8. 	for (int i = 0; i < n; i++){
  9. 		cin >> a[i];
  10. 	}
  11.  
  12. 	vector<int> gaps;
  13. 	for (int i = 1; i < n; i++){
  14. 		gaps.push_back(a[i] - a[i-1] - 1);
  15. 	}
  16.  
  17. 	sort(gaps.begin(), gaps.end());
  18.  
  19. 	int ans = n;
  20. 	for (int i = 0; i < n - k; i++){
  21. 		ans += gaps[i];
  22. 	}
  23. 	cout << ans << '\n';
  24. }
Success #stdin #stdout 0s 5316KB
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stdin
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3 2
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3
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stdout
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4
https://ideone.com/GBBJPT
language:
C++ (gcc 8.3)
created:
1 day ago
visibility:
public

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