// Standard I/O #include #include #include // Standard Library #include #include #include #include // Template Class #include #include #include #include #include #include #include #include // Container Control #include using namespace std; #define rep( i, n ) for( int i = 0; i < n; ++i ) #define irep( i, n ) for( int i = n-1; i >= 0; --i ) #define reep( i, s, n ) for ( int i = s; i < n; ++i ) #define ireep( i, n, s ) for ( int i = n-1; i >= s; --i ) #define foreach(itr, x) for( typeof(x.begin()) itr = x.begin(); itr != x.end(); ++itr) #define mp( a, b ) make_pair( a, b ) #define pb( a ) push_back( a ) #define all( v ) v.begin(), v.end() #define fs first #define sc second #define vc vector // for visualizer.html double SCALE = 1.0; double OFFSET_X = 0.0; double OFFSET_Y = 0.0; #define LINE(x,y,a,b) cerr << "line(" << SCALE*(x) + OFFSET_X << "," \ << SCALE*(y) + OFFSET_Y << "," \ << SCALE*(a) + OFFSET_X << "," \ << SCALE*(b) + OFFSET_Y << ")" << endl; #define CIRCLE(x,y,r) cerr << "circle(" << SCALE*(x) + OFFSET_X << "," \ << SCALE*(y) + OFFSET_Y << "," \ << SCALE*(r) << ")" << endl; typedef long long ll; typedef complex Point; typedef pair pii; typedef pair ipii; typedef vector vi; typedef vector vd; typedef vector< vector > vii; typedef vector< vector > vdd; typedef vector::iterator vi_itr; const int IINF = 1 << 28; const double INF = 1e30; const double EPS = 1e-10; const double PI = acos(-1.0); // Direction : L U R D const int dx[] = { -1, 0, 1, 0}; const int dy[] = { 0, -1, 0, 1 }; struct Data { ll id, cost; Data() {} Data( ll id, ll cost ) :id(id), cost(cost) {} bool operator < ( const Data& d ) const { return cost < d.cost; } }; ll N, S; ll P[32]; Data d[2][1 << 16]; int main() { cin >> N >> S; rep(i, N) cin >> P[i]; int n1 = N/2, n2 = N - n1; rep(i, 1 << n1){ ll sum = 0; rep(j, n1){ sum += (i & (1 << j)) ? P[j] : 0; } d[0][i] = Data(i, sum); } rep(i, 1 << n2){ ll sum = 0; rep(j, n2){ sum += (i & (1 << j)) ? P[n1+j] : 0; } d[1][i] = Data(i, sum); } stable_sort( d[0], d[0]+(1 << n1) ); stable_sort( d[1], d[1]+(1 << n2) ); set ans; rep(i, 1 << n2){ auto itr1 = lower_bound( d[0], d[0]+(1 << n1), Data(0, S - d[1][i].cost) ); auto itr2 = upper_bound( d[0], d[0]+(1 << n1), Data(0, S - d[1][i].cost) ); if( itr2 - itr1 > 0 ){ for( auto itr = itr1; itr != itr2; ++itr ){ vi tmp; string str = ""; bool isFirst = true; rep(j, n1){ if( (itr->id & (1 << j)) != 0 ){ tmp.pb(j+1ll); } } rep(j, n2){ if( (d[1][i].id & (1 << j)) != 0 ){ tmp.pb(n1+j+1ll); } } ans.insert(tmp); } } } for( auto s : ans ){ rep(i, s.size()){ if( i != 0 ) cout << " "; cout << s[i]; } cout << endl; } }