include<bits/stdc++.h>

using namespace std; int a[100005]; int s1[100005]; int main(){

int t;
int n,s;
scanf("%d",&t);
while(t--)
{
	scanf("%d%d",&n,&s);
	for(int i=1;i<=n;i++)
	{
		scanf("%d",&a[i]);
		s1[i]=s1[i-1]+a[i];
	}
	int min=100000+1;
	int x=0;
	int l=1;
	int r=1;
	int sum=a[l];
	while(l<=r&&r<=n)
	{
		if(sum>=s)
		{
			int len=r-l+1;
			if(len<min)
			{
				x=1;
				min=len;
			}
			sum-=a[l];
			l++;
		}
		else
		{
			r++;
			sum+=a[r];
		}
	}
	if(x==0)
	{
		cout<<0<<endl;
	}
	else
	{
		printf("%d\n",min);
	}
}
return 0;

}