#include<iostream>
#include<cstdio>
using namespace std;
int n, m, a[100002], ans;

int main() {
    scanf("%d%d", &n, &m); ans = n + 1;
    for (int i = 1; i <= n; i++) {
        scanf("%d", &a[i]);
        if (a[i] + a[i - 1] <= m)a[i] += a[i - 1], ans--;
    }
    printf("%d\n", ans);
    return 0;
}