#include <bits/stdc++.h>
using namespace std;

int main() {
	// your code goes here
	int n;
	cin>>n;
	int k;
	cin>>k;
	int arr[n];
	for(int i=0;i<n;i++)
	{
		cin>>arr[i];
	}
	
	int i=0,j=0,sum=0,count=0;
	while(i<n && j<n)
	{
		sum+=arr[j];
		while(sum>k)
		{
			sum-=arr[i];
			i++;
		}
		count+=j-i+1;
		j++;
	}
	cout<<count;
	return 0;
}