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  1. #include <bits/stdc++.h>
  2. using namespace std;
  3.  
  4. int a[1007], n, ans = 0;
  5.  
  6. int main() {
  7. 	ios::sync_with_stdio(false);
  8. 	cin.tie(0);
  9.  
  10. 	cin >> n;
  11. 	for (int i = 1; i <= n; i++) cin >> a[i];
  12.  
  13. 	for (int i = 1; i <= n; i++) {
  14. 		map<int, int> cnt;
  15. 		for(int j = i; j <= n; j++) {
  16. 			cnt[a[j]]++;	
  17. 			if (cnt.size() > 2) break;
  18. 			for (auto [color, amount] : cnt) {
  19. 				ans = max(ans, amount);
  20. 			}
  21. 		}
  22. 	}
  23.  
  24. 	cout << ans;
  25. }
  26.  
Success #stdin #stdout 0.01s 5300KB
comments (?)
stdin
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9
2
7
3
7
7
3
7
5
7
stdout
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4
https://ideone.com/RqqJZQ
language:
C++14 (gcc 8.3)
created:
37 days ago
visibility:
public

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