/* package whatever; // don't place package name! */
 
import java.util.*;
import java.lang.*;
import java.io.*;
 
/* Name of the class has to be "Main" only if the class is public. */
class Ideone
{
	public static void main (String[] args) throws java.lang.Exception
	{
		// your code goes here
		Scanner sc=new Scanner(System.in);
		int n=sc.nextInt();
		int arr[]=new int[n];
		int k=sc.nextInt();
		for(int i=0;i<n;i++)
		arr[i]=sc.nextInt();
		int count=0;
		int sum=0;
		for(int i=0,j=0;j<n;j++)
		{
			sum+=arr[j];
			while(sum>k)
			{
				sum-=arr[i];
				i++;
			}
			count+=(j-i+1);
		}
		System.out.println(count);
	}
}

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MTUgNCAKMSAyIDMgNSA4IDggOCA4IDIgMSAxIDEgMSAxIDkg

15 4 
1 2 3 5 8 8 8 8 2 1 1 1 1 1 9