import java.util.*;
 
public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int n = sc.nextInt();
        int k = sc.nextInt();
 
        int[] nums = new int[n];
        for (int i = 0; i < n; i++) {
            nums[i] = sc.nextInt();
        }
        int cnt = 0;
        int sum = 0;
 
        // Number of subarrays whose sum <= K (All numbers in the array>=0) 
 
 
        for (int i = 0, j = 0; j < n; j++) {
            sum += nums[j];
            while (sum > k) {
                sum -= nums[i];
                i++;
            }
            cnt += (j - i + 1);
        }
        System.out.println(cnt);
        sc.close();
    }
}
 

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