分蛋糕

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

int main(){
	int n,k;
	cin>>n>>k;
	int a[n];
	int weight = 0;
	int cnt = 0;
	for(int i= 0; i < n; i++){
		cin>>a[i];
		weight += a[i];
		if(weight >= k){
			cnt++;
			weight = 0;
		}
		
	}
	if(weight != 0){
		cnt++;
	}
	cout<<cnt;
	
}