Submission

Score: 100

User: Nay-O

Problemset: ผลบวก (กลาง)

Language: cpp

Time: 0.045 second

Submitted On: 2025-10-21 14:45:05

#include<bits/stdc++.h>
using namespace std;

int main(){
    ios_base::sync_with_stdio(false); cin.tie(NULL);
    
    int n; cin >> n;
    int arr[n];
    cin >> arr[0];
    int sum = arr[0];
    for(int i = 1; i < n; i++){
        int x; cin >> x;
        sum += x;
        arr[i] = sum;
    }
    
    int q; cin >> q;
    while(q--){
        int x, y;
        cin >> x >> y;
        if(x == 0){
            cout << arr[y] << "\n";
            continue;
        }
        cout << arr[y] - arr[x-1]<<"\n";
    }
    
    return 0;
}