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  1. #include <iostream>
  2. using namespace std;
  3. int main() {
  4. 	int n,m;
  5. 	cin>>n>>m;
  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. 	for(int i=1; i<=n; i++)
  11. 		pr[i]=pr[i-1]+a[i];
  12. 	for(int i=1; i<m; i++){
  13. 		int x,y;
  14. 		cin>>x>>y;
  15. 	cout<<pr[y]-pr[x-1]<<endl;
  16. 	}
  17. }
Success #stdin #stdout 0.01s 5276KB
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stdin
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5 2
1 2 3 4 5
2 4
3 5
5 2
1 2 3 4 5
2 4
3 5
5 2
1 2 3 4 5
2 4
3 5
5 2
1 2 3 4 5
2 4
3 5
5 2
1 2 3 4 5
2 4
3 5
stdout
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9
https://ideone.com/z08alT
language:
C++14 (gcc 8.3)
created:
2 days ago
visibility:
public

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