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  1. #include <iostream>
  2. using namespace std;
  3. int main() {
  4. 	int n,k;
  5. 	cin>>n;
  6. 	int a[n+1];
  7. 	long long pr[n+2]={0,};
  8. 	for(int i=1; i<=n; i++)
  9. 		cin>>a[i];
  10. 	cin>>k;
  11. 	for(int i=1; i<=n; i++)
  12. 		if(a[i]==0) pr[i]=pr[i-1]+1;
  13. 		else pr[i]=pr[i-1];
  14. 	for(int i=0; i<k; i++){
  15. 		int x,y;
  16. 		cin>>x>>y;
  17. 	cout<<pr[y]-pr[x-1]<<endl;
  18. 	}
  19. }
Success #stdin #stdout 0.01s 5284KB
comments (?)
stdin
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3 3 2
1 2 3
4 5 6
7 8 9
2 2 3 3
1 1 2 3
stdout
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0
14056283088
https://ideone.com/FHzKBs
language:
C++14 (gcc 8.3)
created:
2 days ago
visibility:
public

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