#include<bits/stdc++.h>
namespace {
#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Wunused-function"
#include<atcoder/all>
#pragma GCC diagnostic pop
using namespace std;
using namespace atcoder;
#define rep(i,n) for(int i = 0; i < (int)(n); i++)
#define rrep(i,n) for(int i = (int)(n) - 1; i >= 0; i--)
#define all(x) begin(x), end(x)
#define rall(x) rbegin(x), rend(x)
template<class T> bool chmax(T& a, const T& b) { if (a < b) { a = b; return true; } else return false; }
template<class T> bool chmin(T& a, const T& b) { if (b < a) { a = b; return true; } else return false; }
using ll = long long;
using P = pair<int,int>;
using VI = vector<int>;
using VVI = vector<VI>;
using VL = vector<ll>;
using VVL = vector<VL>;

} int main() {
  ios::sync_with_stdio(false);
  cin.tie(0);
  ll fib[75];
  fib[0] = 1;
  fib[1] = 2;
  for(int i = 2; i < 75; i++) fib[i] = fib[i-1] + fib[i-2];
  int tt;
  cin >> tt;
  while(tt--) {
    int n;
    ll w;
    cin >> n >> w;
    ll c[75];
    rep(i, n) cin >> c[i];
    int i = n - 1;
    while(i >= 0 && c[i] > w) i--;
    constexpr long long INF = 1002003004005006007;
    ll c0 = 0, c1 = INF;
    ll ans = 0;
    while(i >= 0) {
      ans += fib[i];
      chmin(c1, c0);
      c0 += c[i];
      int nimx = -1;
      for(int ni = i - 1; ni >= 0; ni--) if (c0 + c[ni] <= w) {
        nimx = ni;
        break;
      }
      {
        ll cc = c1;
        for(int i1 = i - 1; i1 > 0; i1 -= 2) {
          cc += c[i1];
          if (cc + c[i1-1] <= w) {
            ll c2 = cc + c[i1 - 1];
            for(int ni = i1 - 2; ni >= 0; ni--) if (c2 + c[ni] <= w) {
              chmax(nimx, ni);
              break;
            }
          }
        }
      }
      ll nc0 = INF, nc1 = INF;
      for(int ni = i - 1; ni >= 0; ni--) if (c0 + c[ni] <= w) {
        if (ni == nimx) chmin(nc0, c0);
        else if (ni == nimx - 1) chmin(nc1, c0);
        break;
      }
      {
        ll cc = c1;
        for(int i1 = i - 1; i1 > 0; i1 -= 2) {
          cc += c[i1];
          if (cc + c[i1-1] <= w) {
            ll c2 = cc + c[i1 - 1];
            for(int ni = i1 - 2; ni >= 0; ni--) if (c2 + c[ni] <= w) {
              if (nimx == ni) chmin(nc0, c2);
              else if (ni == nimx - 1) chmin(nc1, c2);
              break;
            }
          }
        }
      }
      i = nimx;
      c0 = nc0;
      c1 = nc1;
    }
    cout << ans << '\n';
  }
}