using System;

namespace No59{
    public class Program{
        public static void Main(string[] args){
            var sr = new StreamReader();
            //---------------------------------
            var N = sr.Next<int>();
            var K = sr.Next<int>();

            var MAX = 1000000;
            var bit = new BinaryIndexedTree(MAX + 1);
            for(var i = 1; i <= N; i++){
                var w = sr.Next<int>();
                if(w > 0 && bit.Sum(MAX) - bit.Sum(w - 1) < K) bit.Add(w, 1);
                if(w < 0 && bit.Sum(-w) - bit.Sum(-w - 1) >= 1) bit.Add(-w, -1);
            }

            Console.WriteLine(bit.Sum(MAX));
            //---------------------------------
        }
    }

    public class BinaryIndexedTree{
        private readonly int _size;
        private readonly int[] _bit;

        public BinaryIndexedTree(int size){
            _size = size;
            _bit = new int[_size + 1];
        }

        public void Add(int x, int w){
            for(var i = x; i <= _size; i += i & -i) _bit[i] += w;
        }

        public int Sum(int x){
            var ret = 0;
            for(var i = x; i >= 1; i -= i & -i) ret += _bit[i];
            return ret;
        }
    }

    public class StreamReader{
        private readonly char[] _c = {' '};
        private int _index = -1;
        private string[] _input = new string[0];
        private readonly System.IO.StreamReader _sr = new System.IO.StreamReader(Console.OpenStandardInput());

        public T Next<T>(){
            if(_index == _input.Length - 1){
                _index = -1;
                while(true){
                    string rl = _sr.ReadLine();
                    if(rl == null){
                        if(typeof(T).IsClass) return default(T);
                        return (T)typeof(T).GetField("MinValue").GetValue(null);
                    }
                    if(rl != ""){
                        _input = rl.Split(_c, StringSplitOptions.RemoveEmptyEntries);
                        break;
                    }
                }
            }
            return (T)Convert.ChangeType(_input[++_index], typeof(T), System.Globalization.CultureInfo.InvariantCulture);
        }

        public T[] Next<T>(int x){
            var ret = new T[x];
            for(var i = 0; i < x; ++i) ret[i] = Next<T>();
            return ret;
        }

        public T[][] Next<T>(int y, int x){
            var ret = new T[y][];
            for(var i = 0; i < y; ++i) ret[i] = Next<T>(x);
            return ret;
        }
    }
}