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  1. #include <bits/stdc++.h>
  2. using namespace std;
  3.  
  4. int solve(vector<int> v) {
  5. 	unordered_map<int, int> cnt;
  6. 	multiset<int> pq;
  7. 	const int n = v.size();
  8. 	int l = 0, r = 0;
  9. 	int ans = 0;
  10. 	while (r < n) {
  11. 		cnt[v[r]]++;
  12. 		pq.insert(cnt[v[r]]);
  13. 		while(*pq.rbegin() < r-l-2) {
  14. 			auto iter = pq.find(cnt[v[l]]);
  15. 			pq.erase(iter);
  16. 			cnt[v[l]]--;
  17. 			pq.insert(cnt[v[l]]);
  18. 			l++;
  19. 		}
  20. 		ans = max(ans, r-l+1);
  21. 		r++;
  22. 	}
  23. 	return ans;
  24. }
  25.  
  26. int main() {
  27. 	cout<<solve({-9, 8})<<endl;
  28. 	cout<<solve({1, 1, -10, 3, -10, 3, -10})<<endl;
  29. 	cout<<solve({2, 3, 3, 3, 3, 1})<<endl;
  30. 	cout<<solve({3, 3, 2, 1, 2, 2, 9, 3, 3})<<endl;
  31. 	return 0;
  32. }
Success #stdin #stdout 0.01s 5288KB
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https://ideone.com/6TE9hy
language:
C++14 (gcc 8.3)
created:
1 day ago
visibility:
public

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