#include <bits/stdc++.h>
using namespace std;
using ll = long long;

int main(){
    ios::sync_with_stdio(false);
    cin.tie(0);
    vector<ll> fib(77);
    fib[0] = 1;
    fib[1] = 2;
    for(int i = 2; i < 77; i++)fib[i] = fib[i - 1] + fib[i - 2];
    int T;
    cin >> T;
    while(T--){
        int n;
        ll W;
        cin >> n >> W;
        vector<ll> a(n), s(n + 1);
        for(int i = 0; i < n; i++){
            cin >> a[i];
            s[i + 1] = s[i] + a[i];
        }
        ll ans = 0;
        for(int l = 0; l < n; l++){
            for(int r = l; r < n; r++){
                ll w = W - (s[r + 1] - s[l]);
                ll v = fib[r + 2] - fib[l + 1];
                if(w < 0)continue;
                for(int j = n - 1; j >= 0; j--){
                    if(l <= j && j <= r)continue;
                    if(w >= a[j]){
                        w -= a[j];
                        v += fib[j];
                    }
                }
                ans = max(ans, v);
            }
        }
        cout << ans << '\n';
    }
}