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  1. #include <bits/stdc++.h>
  2. using namespace std;
  3.  
  4. int main() {
  5. 	int t;
  6. 	cin>>t;
  7. 	while(t--){
  8. 		int n;
  9. 		cin>>n;
  10. 		vector<int> a(n);
  11. 		int sum=0,count=0;
  12. 		for(int i=0;i<n;i++){
  13. 			cin>>a[i];
  14. 			sum+=a[i];
  15. 			if(a[i]==-1) count++;
  16. 		}
  17. 		if(sum>=0 && count%2==0) cout<<0<<endl;
  18. 		else if(sum>0 && count%2!=0) cout<<1<<endl;
  19. 		else{
  20. 			if(sum%2==0 && count%2==0) cout<<-(sum)/2<<endl;
  21. 			else if(sum%2==0 && count%2!=0) cout<<-(sum)/2 + 1<<endl;
  22. 			else if(sum%2!=0 && count%2==0) cout<<-(sum)/2 + 1<<endl;
  23. 			else cout<<-(sum)/2<<endl;
  24. 		}
  25. 	}
  26. 	return 0;
  27. }
Success #stdin #stdout 0s 5328KB
comments (?)
stdin
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7
4
-1 -1 1 -1
5
-1 -1 -1 1 1
4
-1 1 -1 1
3
-1 -1 -1
5
1 1 1 1 1
1
-1
2
-1 -1
stdout
copy 
2
0
0
1
0
0
1
https://ideone.com/u4S1Mf
language:
C++ (gcc 8.3)
created:
3 days ago
visibility:
public

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