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

int main()
{
    int n, p;
    cin >> n >> p;
    vector<int> a(n+1, 0);
    int l=0, r=1, sum=0;
    while (sum < p){
        cin >> a[r];
        sum += a[r];
        r++;
    }
    int op = r-1;
    while (r<=n){
        cin >> a[r];
        sum += a[r];
        while (sum-a[l+1] >= p){
            l++;
            sum -= a[l];
        }
        op = min(op, r-l);
        r++;
    }
    cout << op;
}