include[HTML_REMOVED]

using namespace std;
int n,s,a[100005],t,sum,mx;
int main(){ 
    cin>>n>>t;
    for(int i=1,j=1;i<=n;i++)
    {
        cin>>a[i];
        sum+=a[i];
        s++;
        while(sum>t)
        {
            sum-=a[j];
            j++;
            s--;
        }
        mx=max(s,mx);
        //cout<<s<<endl;
    } 
    cout<<mx;
    return 0;
}