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

int main() {
	vector<int> nums={2,1,1,5,8};
	int k=4;
	int count=0;
	int sum=0;
	int low=0;
	int high=0;
	
	for(high=0;high<nums.size();high++) {
		sum+=nums[high];
		while(sum>k && low<=high) {
			sum-=nums[low];
			low++;
		}
		count+=high-low+1;
	}
	cout<<count<<endl;
	return 0;
}