import java.util.Scanner;
 
public class Main {
    public static void main(String[] args) {
        int n = 5;
        int[] arr = {6, 7, 3, 2, 2};
        int[] prefixSum = new int[n];
 
        prefixSum[0] = arr[0];
        for (int i = 1; i < n; i++) {
            prefixSum[i] = prefixSum[i - 1] + arr[i];
        }
 
        int q = 4;
        int[] queries = {0, 3, 4, 2};
 
        for (int query : queries) {
            System.out.println(prefixSum[query]);
        }
 
    }
}
 

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