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  1. #include <iostream>
  2. using namespace std;
  3.  
  4. int n;
  5. int a[1004];
  6. int l = 1001, r = 0;
  7.  
  8. bool check(int res) {
  9. 	int cnt = 0;
  10. 	for (int i = 0; i < n; i++) {
  11. 		if (a[i+1] - a[i] > res) {
  12. 			if (a[i+2] - a[i] <= res) {
  13. 				if (cnt) return false;
  14. 				else cnt++, i++;
  15. 			}
  16. 			else return false;
  17. 		}
  18. 	}
  19. 	return true;
  20. }
  21.  
  22. int main() {
  23. 	cin >> n;
  24. 	for (int i = 1; i <= n; ++i) {
  25. 		cin >> a[i];
  26. 		r = max(r, a[i]);
  27. 		l = min(l, a[i]);
  28. 	}
  29. 	a[0] = a[2];
  30. 	a[n+1] = a[n-1];
  31. 	while (l < r) {
  32. 		int mid = (l + r) >> 1;
  33. 		if (check(mid)) r = mid;
  34. 		else l = mid + 1;
  35. 	}
  36. 	cout << l << endl;
  37.  
  38. }
Success #stdin #stdout 0s 3464KB
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stdin
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Standard input is empty
stdout
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1001
https://ideone.com/KPQsis
language:
C++14 (gcc 8.3)
created:
8 years ago
visibility:
public

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