#include <bits/stdc++.h>
using namespace std;
using ull = unsigned long long;
int main() {
  int T;
  cin >> T;
  while(T--) {
    int N, S;
    cin >> N >> S;
    S++;
    vector<ull> B((S + 63) >> 6);
    B[0] = 1;
    while(N--) {
      int a;
      cin >> a;
      int p = a >> 6, q = a & 63;
      for(int i = B.size() - 1; i >= 0; i--) {
        if(i + p + 1 < B.size()) B[i + p + 1] |= B[i] >> (64 - q);
        if(i + p < B.size()) B[i + p] |= B[i] << q;
      }
    }
    if(S & 63) B.back() &= (ull(1) << (S & 63)) - 1;
    int t = B.size() - 1;
    while(!B[t]) t--;
    int u = 63;
    while(!(B[t] >> u)) u--;
    cout << ((t << 6) | u) << endl;
  }
}