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- #include <cstdio>
- #include <vector>
- using namespace std;
- //int a[1000010];
- int main(){
- int n,k,l,r;
- scanf("%d",&n);
- vector<int> a(n+1);
- a[0]=0;
- for(int i=1;i<=n;i++){
- scanf("%d",&k);
- a[i]=a[i-1]+k;
- }
- scanf("%d",&k);
- for(int i=1;i<=k;i++){
- scanf("%d %d",&l,&r);
- printf("%d\n",a[r]-a[l-1]);
- }
- return 0;
- }
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