using System; using System.Linq; using System.Collections.Generic; using Debug = System.Diagnostics.Debug; using StringBuilder = System.Text.StringBuilder; //using System.Numerics; namespace Program { public class Solver { public void Solve() { var n = sc.Integer(); var s = sc.Long(); var m = n / 2; var k = n - m; var a = sc.Long(m); var b = sc.Long(k); var val = new long[1 << k]; var id = new long[1 << k]; for (int i = 0; i < 1 << k; i++) { for (int j = 0; j < k; j++) if (((i >> j) & 1) == 1) val[i] += b[j]; id[i] = i; } Array.Sort(val, id); var ans = new List(); for (int i = 0; i < 1 << m; i++) { long v = 0; for (int j = 0; j < m; j++) if (((i >> j) & 1) == 1) v += a[j]; if (v > s) continue; var p = val.LowerBound(s - v); var q = val.UpperBound(s - v); for (int j = p; j < q; j++) ans.Add(i + (id[j] << m)); } ans.Sort((l, r) => { for (int i = 0; i <= 32; i++) { if ((((l >> i)) & 1) == 0 && (((r >> i) & 1) == 1)) return 1; if ((((l >> i) & 1) == 1) && (((r >> i) & 1) == 0)) return -1; } return 0; }); foreach (var x in ans) { var buf = new List(); for (int i = 0; i <= 32; i++) if (((x >> i) & 1) == 1) buf.Add(i + 1); IO.Printer.Out.WriteLine(buf.AsJoinedString()); } } internal IO.StreamScanner sc = new IO.StreamScanner(Console.OpenStandardInput()); static T[] Enumerate(int n, Func f) { var a = new T[n]; for (int i = 0; i < n; ++i) a[i] = f(); return a; } static T[] Enumerate(int n, Func f) { var a = new T[n]; for (int i = 0; i < n; ++i) a[i] = f(i); return a; } } } #region Ex namespace Program.IO { using System.IO; using System.Linq; public class Printer : StreamWriter { static Printer() { Out = new Printer(Console.OpenStandardOutput()) { AutoFlush = false }; } public static Printer Out { get; set; } public override IFormatProvider FormatProvider { get { return System.Globalization.CultureInfo.InvariantCulture; } } public Printer(System.IO.Stream stream) : base(stream, new System.Text.UTF8Encoding(false, true)) { } public void Write(string format, IEnumerable source) { base.Write(format, source.OfType().ToArray()); } public void WriteLine(string format, IEnumerable source) { base.WriteLine(format, source.OfType().ToArray()); } } public class StreamScanner { public StreamScanner(Stream stream) { str = stream; } private readonly Stream str; private readonly byte[] buf = new byte[1024]; private int len, ptr; public bool isEof = false; public bool IsEndOfStream { get { return isEof; } } private byte read() { if (isEof) return 0; if (ptr >= len) { ptr = 0; if ((len = str.Read(buf, 0, 1024)) <= 0) { isEof = true; return 0; } } return buf[ptr++]; } public char Char() { byte b = 0; do b = read(); while (b < 33 || 126 < b); return (char)b; } public char[] Char(int n) { var a = new char[n]; for (int i = 0; i < n; i++) a[i] = Char(); return a; } public string Scan() { var sb = new StringBuilder(); for (var b = Char(); b >= 33 && b <= 126; b = (char)read()) sb.Append(b); return sb.ToString(); } public long Long() { if (isEof) return long.MinValue; long ret = 0; byte b = 0; var ng = false; do b = read(); while (b != '-' && (b < '0' || '9' < b)); if (b == '-') { ng = true; b = read(); } for (; true; b = read()) { if (b < '0' || '9' < b) return ng ? -ret : ret; else ret = ret * 10 + b - '0'; } } public int Integer() { return (isEof) ? int.MinValue : (int)Long(); } public double Double() { return double.Parse(Scan(), System.Globalization.CultureInfo.InvariantCulture); } private T[] enumerate(int n, Func f) { var a = new T[n]; for (int i = 0; i < n; ++i) a[i] = f(); return a; } public string[] Scan(int n) { return enumerate(n, Scan); } public double[] Double(int n) { return enumerate(n, Double); } public int[] Integer(int n) { return enumerate(n, Integer); } public long[] Long(int n) { return enumerate(n, Long); } public void Flush() { str.Flush(); } } } static class Ex { static public string AsString(this IEnumerable ie) { return new string(System.Linq.Enumerable.ToArray(ie)); } static public string AsJoinedString(this IEnumerable ie, string st = " ") { return string.Join(st, ie); } static public void Main() { var solver = new Program.Solver(); solver.Solve(); Program.IO.Printer.Out.Flush(); } } #endregion #region BinarySearch for Array static public partial class Algorithm { static private int binarySearch(this T[] a, int idx, int len, T v, Comparison cmp, bool islb) { int l = idx; int h = idx + len - 1; while (l <= h) { int i = l + ((h - l) >> 1); int ord; if (a[i] == null || v == null) return -1; else ord = cmp(a[i], v); if (ord < 0) l = i + 1; else if (ord == 0) { if (!islb) l = i + 1; else h = i - 1; } else h = i - 1; } return l; } static public int UpperBound(this T[] a, int idx, int len, T v, Comparison cmp) { return binarySearch(a, idx, len, v, cmp, false); } static public int UpperBound(this T[] a, int idx, int len, T v) where T : IComparable { return UpperBound(a, idx, len, v, Comparer.Default.Compare); } static public int UpperBound(this T[] a, T v) where T : IComparable { return UpperBound(a, 0, a.Length, v, Comparer.Default.Compare); } static public int UpperBound(this T[] a, T v, IComparer cmp) { return UpperBound(a, 0, a.Length, v, cmp.Compare); } static public int UpperBound(this T[] a, T v, Comparison cmp) { return UpperBound(a, 0, a.Length, v, cmp); } static public int LowerBound(this T[] a, int idx, int len, T value, Comparison cmp) { return binarySearch(a, idx, len, value, cmp, true); } static public int LowerBound(this T[] a, int idx, int len, T value) where T : IComparable { return LowerBound(a, idx, len, value, Comparer.Default.Compare); } static public int LowerBound(this T[] a, T val) where T : IComparable { return LowerBound(a, 0, a.Length, val, Comparer.Default.Compare); } static public int LowerBound(this T[] a, T val, IComparer cmp) { return LowerBound(a, 0, a.Length, val, cmp.Compare); } static public int LowerBound(this T[] a, T v, Comparison cmp) { return LowerBound(a, 0, a.Length, v, cmp); } } #endregion