#include<bits/stdc++.h>
using namespace std;
long long n,m;
long long a[19999999]; 
int main(){
	cin>>n>>m;
	long long ans=0;
	for(int i=0;i<n;i++){
		cin>>a[i];
	}
	long long l=1;
	long long sum=0;
	long long minlen=INT_MAX;
	for(int r=0;r<n;r++){
		sum=sum+a[r];
		while(sum>=m){
			minlen=min(minlen,r-l+1);
			sum=sum-a[l];
			l++;
		}
	}
	if(minlen==INT_MAX){
		cout<<"0";
	}
	else{
		cout<<minlen;
	}
	return 0;
}

/**************************************************************
	Problem: 2105
	User: zengdongxin
	Language: C++
	Result: Memory Limit Exceed
****************************************************************/