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

#define ll long long
#define pb push_back
#define mp make_pair
#define fi first
#define se second

const int maxn = 1e5;

int n, p;
int v[1 + maxn];

void solve() {
    cin >> n >> p;
    for(int i = 1; i <= n; i++) {
        cin >> v[i];
    }
    int l = 1, r = 1, sum = 0, ans = n;
    while(l <= n) {
        while(r <= n && sum < p) {
            sum += v[r];
            r++;
        }
        ans = min(ans, r - l + 1);
        sum -= v[l];
        l++;
    }
    cout << ans << "\n";
}

int main() {
    ios_base::sync_with_stdio(false);
    cin.tie(nullptr);
    solve();
    return 0;
}