#include <bits/stdc++.h>

using namespace std;

int main()
{
    int n, m;
    cin >> n >> m;

    set<int> benne;
    int osszeg = 0;
    int b = 0;
    bool jo = 1;
    int db = 1;

    for(int i = 0; i < n; i++){
        int a;
        cin >> a;

        if(!jo && a > b || a + osszeg > m || benne.count(a)){
            db++;
            jo = 1;
            benne.clear();
            osszeg = 0;
        } else{
            if(a < b) jo = 0;
        }

        b = a;
        benne.insert(a);
        osszeg += a;
    }

    cout << n - db << "\n";
}