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


int main() {
    int n, m;
    cin >> n >> m;
    vector<int> a(n+1);
    for(int i = 1; i <= n; i++) {
        cin >> a[i];
    }

    int db = 1;

    int sum = a[1];
    int milyen = 0;

    for(int i = 2; i <= n; i++) {
        if (sum + a[i] > m) {
            //cout << 0 << ' ';
            sum = a[i];
            milyen = 0;
            db++;
        } else if (a[i] > a[i-1] && (milyen == 0 || milyen == 1)) {
            //cout << 1 << ' ';
            sum += a[i];
            milyen = 1;
        } else if (a[i] < a[i-1]) {
            //cout << 2 << ' ';
            sum += a[i];
            milyen = -1;
        } else if (a[i] > a[i-1] && milyen == -1) {
            //cout << 3 << ' ';
            sum = a[i];
            db++;
            milyen = 0;
        } else if (a[i] == a[i-1]) {
            //cout << 4 << ' ';
            sum = a[i];
            db++;
            milyen = 0;
        }
        //cout << i << ": " << db << ' ' << milyen << ' ' << sum << endl;
    }
    cout << n-db << endl;
}
/*
12 16
1 3 5 4 2 6 8 7 6 5 3 4
*/