#include<iostream>
#include<vector>
using namespace std;
int main(void){
	int n;
	cin>> n;
	int k;
	cin>>k;
	vector<int> arr(n);
	//take the input from the user
	for(int i=0;i<n;i++){
		cin>>arr[i];
	}
	int sum=0;
	int count=0;
	for(int i=0,j=0;j<n;j++){
		sum+=arr[j];
		while(sum>k){
			sum=sum-arr[i];
			i++;
		}
		count+=(j-i+1);
	}
	cout<<count;
	return 0;
}
 
 
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