#include <bits/stdc++.h>
using namespace std;
#define REP(i,n) for(int i=0;i<(int)(n);++i)
#define FOR(i,c) for(__typeof((c).begin())i=(c).begin();i!=(c).end();++i)
#define ALL(c) (c).begin(), (c).end()
#define valid(y,x,h,w) (0<=y&&y<h&&0<=x&&x<w)
#define tpl(...) make_tuple(__VA_ARGS__)
const int INF = 0x3f3f3f3f;
const double EPS = 1e-8;
const double PI = acos(-1);
typedef long long ll;
typedef pair<int,int> pii;
template<class T>bool chmax(T &a, const T &b) { if (a<b) { a=b; return 1; } return 0; }
template<class T>bool chmin(T &a, const T &b) { if (b<a) { a=b; return 1; } return 0; }
template<class T>ostream&operator<<(ostream &o,const vector<T>&t){o<<'[';FOR(i,t){if(i!=t.begin())o<<',';o<<*i;}return o<<']';}
template<class S,class T>ostream&operator<<(ostream &o,const pair<S,T>&t){return o<<'('<<t.first<<','<<t.second<<')';}
template<int N,class Tp>void output(ostream&,const Tp&){}
template<int N,class Tp,class,class ...Ts>void output(ostream &o,const Tp&t){if(N)o<<',';o<<get<N>(t);output<N+1,Tp,Ts...>(o,t);}
template<class ...Ts>ostream&operator<<(ostream&o,const tuple<Ts...>&t){o<<'(';output<0,tuple<Ts...>,Ts...>(o,t);return o<<')';}
template<class T>void output(T t,char z=10){if(t<0)t=-t,putchar(45);int c[20];
int k=0;while(t)c[k++]=t%10,t/=10;for(k||(c[k++]=0);k;)putchar(c[--k]^48);putchar(z);}
template<class T>void outputs(T t){output(t);}
template<class S,class ...T>void outputs(S a,T...t){output(a,32);outputs(t...);}
template<class T>void output(T *a,int n){REP(i,n)output(a[i],i!=n-1?',':10);}
template<class T>void output(T *a,int n,int m){REP(i,n)output(a[i],m);}
template<class T>bool input(T &t){int n=1,c;for(t=0;!isdigit(c=getchar())&&~c&&c-45;);
if(!~c)return 0;for(c-45&&(n=0,t=c^48);isdigit(c=getchar());)t=10*t+c-48;t=n?-t:t;return 1;}
template<class S,class ...T>bool input(S&a,T&...t){input(a);return input(t...);}
template<class T>bool inputs(T *a, int n) { REP(i,n) if(!input(a[i])) return 0; return 1;}

template<class T>
struct BIT {
  int N, K; T B[1000010];
  void init(int n) {N=n;REP(i,n)B[i]=0;for(K=1;(K<<1)<N;K<<=1);}
  void add(int x, T w) { for (; x<N; x|=x+1) B[x]+=w; }
  T sum(int a) { T r=0; for (int x=a-1; x>=0; x=(x&(x+1))-1) r+=B[x]; return r; }
  T sum(int a, int b) { return sum(b)-sum(a); }
  int lb(T w) { int x=0; for(int k=K; k; k>>=1) if (x+k<=N && B[x+k-1]<w) w-=B[x+k-1], x+=k; return x; }
};

int main() {
  int n,k;
  while(cin>>n>>k) {
    static BIT<int> bit;
    bit.init(1000007);
    int num = 0;
    REP(i,n) {
      int w;
      cin >> w;
      if (w > 0) {
        if (bit.sum(w,1000005) < k) {
          bit.add(w,1);
          num++;
        }
      } else if (w < 0) {
        w = -w;
        if (bit.sum(w,w+1) > 0) {
          bit.add(w,-1);
          num--;
        }
      }
    }
    cout << num << endl;
  }
}