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  1. #include<bits/stdc++.h>
  2. #define ll long long
  3. using namespace std;
  4.  
  5. int main(){
  6. 	int n,mx = 0,tmx = 0;	cin >> n;
  7. 	vector<int> a(n);
  8. 	for(int i=0;i<n;i++)	cin >> a[i];
  9. 	//vector<int> &a2 = a1;
  10. 	a.insert(a.end(),a.begin(),a.end());
  11.  
  12. 	for(int i=0;i<2*n;++i){
  13. 		if(a[i] == 1)	++tmx;
  14. 		else{
  15. 			mx = max(mx,tmx);
  16. 			tmx = 0;
  17. 		}
  18. 	}
  19. 	cout << mx;
  20. 	return 0;
  21. }
Success #stdin #stdout 0s 5280KB
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https://ideone.com/IOHam4
language:
C++14 (clang 8.0)
created:
1 day ago
visibility:
public

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