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

int main(){
    ios_base::sync_with_stdio(0);cin.tie(0);

    int n, p;
    cin>>n>>p;
    vector<int> v(n);
    for (int &i : v) cin>>i;
    int l=0,r=1;
    int ans=INT_MAX;
    int sum=v[0];
    while (l<n){
        while (sum<p && r<n){
            sum+=v[r];
            r++;
        }
        if (sum<p) break;
        while (sum>=p && l<r){
            ans=min(ans, r-l);
            sum-=v[l];
            l++;
        }
    }
    cout<<ans;
}