nkmaxseq

//#include<bits/stdc++.h>
#include<iostream>
#include<fstream>
#include<vector>

#define long long long
#define nln '\n'

const long N = 1e5+10;

using namespace std;

// Global variables: f1, f2, n, p, a, tol

fstream f1, f2;

inline void openf()
{
    f1.open("nkmaxseq.inp", ios:: in);
    f2.open("nkmaxseq.out", ios:: out);
}

inline void closef()
{
    f1.close();
    f2.close();
}

long p, n;
vector<long> a;
vector<long> tol;

void data()
{
    f1.tie(0)->sync_with_stdio(0);
    f2.tie(0)->sync_with_stdio(0);
    //cin.tie(0)->sync_with_stdio(0);
    cin >> n >> p;
    for (long i = 0; i != n; ++i)
    {
        long x;
        cin >> x;
        a.push_back(x);
    }

    tol.resize(n, 0);
    tol[0] = a[0];
    for (long i = 1; i != n; ++i)
        tol[i] = tol[i-1] + a[i];
}

long sum(long i, long j)
{
    return (tol[j]-tol[i-1]);
}

bool check(long len)
{
    for (long i = 0; i+len-1 != n; ++i)
        if (sum(i, i+len-1) >= p)
            return 1;
    return 0;
}

long ans = -1;

void process()
{
    for (long len = n; len >= 1; --len)
        if (check(len))
        {
            ans = len;
            return;
        }
}

void view()
{
    cout << ans << nln;
}

int main()
{
    openf();
    data();
    process();
    view();
    closef();
    return 0;
}