#include<bits/stdc++.h>
using namespace std;
int n,m,a[10000001],k=0,l=0,ans=INT_MAX;
int main(){
	cin>>n>>m;
	for(int i=1;i<=n;i++){
		cin>>a[i];
		
	}
	for(int i=0;i<m;i++){
		k+=a[i];
		while(k>=m){
			ans=min(ans,i-l+1);
				k-=a[l];
			l++;
			
		
		}
	}
	cout<<(ans==INT_MAX ? 0 : ans);
}
/**************************************************************
	Problem: 2105
	User: zhengzihao
	Language: C++
	Result: Wrong Answer
****************************************************************/