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- #include<bits/stdc++.h>
- using namespace std;
- int main(){
- int n; cin >> n;
- vector<int> nums(n);
- for(int i = 0 ; i < n; i++)
- cin >> nums[i];
- int q; cin >> q;
- vector<int> sums;
- sums.push_back(0);
- for(int i = 0; i < n; i++){
- sums.push_back(nums[i]+sums[i]);
- }
- for(int i = 0; i < q; i++){
- int x,y; cin >> x >> y;
- cout << sums[y+1]-sums[x] << endl;
- }
- }
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