#include <iostream>
using namespace std;
const int N = 1010;

int n, k;
int a[N];

int main()
{
    cin >> n >> k;
    for(int i = 1; i <= n; ++ i) cin >> a[i];

    int cnt = 0, sum = 0;
    for(int i = 1; i <= n; ++ i)
    {
        sum += a[i];
        if(sum >= k)
        {
            sum = 0;
            cnt ++;
        }
        else if(sum < k && i == n) cnt ++;
    }

    cout << cnt << endl;

    return 0;
}