#include #include using namespace std; using namespace atcoder; #define rep(i, n) REP(i, 0, n) #define REP(i, s, e) for (ll i = (s); i < (ll)(e); i++) #define repr(i, n) REPR(i, n, 0) #define REPR(i, s, e) for (ll i = (ll)(s - 1); i >= (ll)(e); i--) #define all(r) r.begin(), r.end() #define rall(r) r.rbegin(), r.rend() typedef long long ll; typedef vector vi; typedef vector vl; template bool chmax(T& a, const U& b) { if (a >= b) return false; a = b; return true; } template bool chmin(T& a, const U& b) { if (a <= b) return false; a = b; return true; } void yes_no(bool f, string yes = "Yes", string no = "No") { cout << (f ? yes : no) << "\n"; } void solve() { ll n, s; cin >> n >> s; vl a(n); rep(i, n) cin >> a[i]; using B = bitset<40>; map mp; set ans; int h = (n + 1) / 2; rep(mask, 1 << h) { ll sum = 0; rep(i, h) if (mask & (1 << i)) { sum += a[i]; } mp[sum].emplace_back(mask); } rep(mask, 1 << (n - h)) { ll sum = 0; vl v; rep(i, n - h) if (mask & (1 << i)) { sum += a[i + h]; v.emplace_back(i + h); } if (sum > s) continue; ll d = s - sum; for (auto&& x : mp[d]) { auto u = v; rep(k, h) if (x & (1 << k)) u.emplace_back(k); sort(all(u)); ans.emplace(u); } } for (auto&& v : ans) { rep(i, v.size()) cout << v[i] + 1 << (i + 1 == (int)v.size() ? '\n' : ' '); } } int main() { cin.tie(0); ios::sync_with_stdio(false); int t = 1; // cin >> t; rep(ti, t) solve(); return 0; }