#include <bits/stdc++.h>
using namespace std;
int main()
{
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    int n,m; cin>>n>>m; int a[n];
    for(int i=0; i<n; i++){cin>>a[i];}
    int s=0,k=0,p=0,l=0;
    while(s<m){s+=a[p]; p++;} int mini=p; p--;
    while(p<n-1){
        p++; s+=a[p];
        while(s-a[l]>=m){s-=a[l]; l++;}
        if(p-l+1<mini)mini=p-l+1;}
    cout<<mini;
    return 0;
}