import java.util.*;
 
public class Main {
 
    static int bruteForceSum(int[] nums, int l, int r) {
        int sum = 0;
        for (int i = l; i <= r; ++i) {
            sum += nums[i];
        }
        return sum;
    }
 
    public static void main(String[] args) {
        int[] nums = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9};
 
        int l = 3, r = 7; // Example range [l, r]
        System.out.println("Brute Force Sum: " + bruteForceSum(nums, l, r));
    }
}

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