using System; using System.Linq; using System.Collections.Generic; using Debug = System.Diagnostics.Debug; using StringBuilder = System.Text.StringBuilder; using System.Numerics; using Number = System.Int64; namespace Program { public class Solver { public void Solve() { var n = sc.Integer(); var m = sc.Integer(); var a = Enumerate(m, x => sc.Integer(n)); long val = -1; var id = -1; for (int _ = 0; _ < m; _++) { var b = a[_]; long v = 0; var L = new FenwickTree(n); for (int i = 0; i < n; i++) { var M = new FenwickTree(n); for (int j = i + 1; j < n; j++) M.Add(b[j], 1); var R = new FenwickTree(n); for (int j = n - 1; j > i; j--) { M.Add(b[j], -1); if (M[1, n] > 0) { v++; } else { if (b[i] < b[j]) { if (R[1, b[j] - 1] > 0) { v++; } else if (L[b[i] + 1, n] > 0) { v++; } } else if (b[i] > b[j]) { if (L[1, b[i] - 1] > 0) { v++; } else if (R[b[j] + 1, n] > 0) { v++; } } } R.Add(b[j], 1); } L.Add(b[i], 1); } Debug.WriteLine(v); if (val < v) { val = v; id = _; } } IO.Printer.Out.WriteLine(id); } public bool ISOTAKUDAIGAKU(long l, long m, long r) { var a = new long[] { l, m, r }; return ISOTAKUDAIGAKU(a); } public bool ISOTAKUDAIGAKU(long[] a) { if (a.Length != 3) return false; if (a.Distinct().Count() != 3) return false; if (a[0] < a[1] && a[1] > a[2]) return true; if (a[0] > a[1] && a[1] < a[2]) return true; return false; } public 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(i); return a; } static public void Swap(ref T a, ref T b) { var tmp = a; a = b; b = tmp; } } } #region main 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 Ex namespace Program.IO { using System.IO; using System.Text; using System.Globalization; 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 CultureInfo.InvariantCulture; } } public Printer(System.IO.Stream stream) : base(stream, new UTF8Encoding(false, true)) { } public Printer(System.IO.Stream stream, Encoding encoding) : base(stream, encoding) { } public void Write(string format, T[] source) { base.Write(format, source.OfType().ToArray()); } public void WriteLine(string format, T[] source) { base.WriteLine(format, source.OfType().ToArray()); } } public class StreamScanner { public StreamScanner(Stream stream) { str = stream; } public 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) && !isEof); return (char)b; } 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 string ScanLine() { var sb = new StringBuilder(); for (var b = Char(); b != '\n'; b = (char)read()) if (b == 0) break; else if (b != '\r') 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 != 0 && b != '-' && (b < '0' || '9' < b)); if (b == 0) return long.MinValue; 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() { var s = Scan(); return s != "" ? double.Parse(Scan(), CultureInfo.InvariantCulture) : double.NaN; } 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 char[] Char(int n) { return enumerate(n, Char); } 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); } } } #endregion #region FenwickTree [System.Diagnostics.DebuggerDisplay("Data={ToString()}")] public class FenwickTree { int n; long[] bit; int max = 1; public FenwickTree(int size) { n = size; bit = new long[n + 1]; while ((max << 1) <= n) max <<= 1; } /// sum[a,b] public long this[int i, int j] { get { return this[j] - this[i - 1]; } } /// sum[0,i] public long this[int i] { get { long s = 0; for (; i > 0; i -= i & -i) s += bit[i]; return s; } } public int LowerBound(long w) { if (w <= 0) return 0; int x = 0; for (int k = max; k > 0; k >>= 1) if (x + k <= n && bit[x + k] < w) { w -= bit[x + k]; x += k; } return x + 1; } /// add v to bit[i] public void Add(int i, long v) { if (i == 0) System.Diagnostics.Debug.Fail("BIT is 1 indexed"); for (; i <= n; i += i & -i) bit[i] += v; } public override string ToString() { return string.Join(",", Enumerable.Range(0, n + 1).Select(i => this[i, i])); } } #endregion