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

int main() {
    vector<int> nums = {2,1,1,5,8};
    int k = 4;
    int count = 0;

    for (int i = 0; i < nums.size(); i++) {
        int sum = 0;

        for (int j = i; j < nums.size(); j++) {
            sum += nums[j];

            if (sum >= k)
                count++;
        }
    }

    cout << count;
}