Submission

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Score: 0

User: yume_snowy

Problemset: ผลบวก (กลาง)

Language: cpp

Time: 0.021 second

Submitted On: 2024-10-23 16:43:40

#include <iostream>
#include <malloc.h>
using namespace std;

int main() {
    ios_base::sync_with_stdio(false);
    int N;
    cin >> N;
    int *a = (int*) malloc(N);

    for (int i=0; i<N; i++) {
        cin >> a[i];
    }

    int *prefix = (int*) malloc(N);
    int n;
    cin >> n;
    int *x = (int*) malloc(n),*y = (int*) malloc(n);

    for (int i=0; i<n; i++) {
        cin >> x[i] >> y[i];
    }

    prefix[0] = a[0];

    for (int i=1; i<N; i++) {
        prefix[i] = prefix[i-1]+a[i];
    }


    for (int i=0; i<n; i++) {
        cout << prefix[y[i]]-prefix[x[i]-1] << "\n";
    }

    free(prefix);
    free(a);
    free(x);
    free(y);
}