#include <iostream>
#include <vector>
using namespace std;

bool isGood(int sum, int len, int k) {
    return (sum % k) == len;
}

int main() {
    vector<int> arr = {1, 3, 2, 4};
    int n = arr.size();
    int k = 4;
    int goodSubarrays = 0;

    for (int i = 0; i < n; i++) {
        int sum = 0;
        for (int j = i; j < n; j++) {
            sum += arr[j];
            int length = j - i + 1;
            
            if (isGood(sum, length, k)) {
                goodSubarrays++;
            }
        }
    }

    cout << "Number of Good Subarrays: " << goodSubarrays << endl;
    return 0;
}