#include <iostream>
#include <cstring>
#include <cstdio>
#include <algorithm>
using namespace std;
const int maxn=100000+10;
int a[maxn];
int t,n,S;
int chiqu()
{   int t=0,s=0,sum=0;
  int ans=n+1;
    while(1)
    {
        while(t<n&&sum<S)
        {
            sum+=a[t++];
        }
        if(sum<S)  break;
        ans=min(ans,t-s);
        sum-=a[s++];
    }
    if(ans>n) ans=0;
    return ans;
}
int main()
{
   scanf("%d",&t);
   while(t--)
   {
       scanf("%d%d",&n,&S);
       for(int i=0;i<n;i++)
           scanf("%d",&a[i]);
         printf("%d\n",chiqu());
   }
    return 0;
}