#include "bits/stdc++.h"
using namespace std;
#define FOR(i,j,k) for(int (i)=(j);(i)<(int)(k);++(i))
#define rep(i,j) FOR(i,0,j)
#define each(x,y) for(auto &(x):(y))
#define mp make_pair
#define all(x) (x).begin(),(x).end()
#define debug(x) cout<<#x<<": "<<(x)<<endl
#define smax(x,y) (x)=max((x),(y))
#define smin(x,y) (x)=min((x),(y))
#define MEM(x,y) memset((x),(y),sizeof (x))
#define sz(x) (int)(x).size()
typedef long long ll;
typedef pair<int, int> pii;
typedef vector<int> vi;
typedef vector<ll> vll;

template<class Val>
struct BinaryIndexedTree{
    int n;
    vector<Val> t;
    BinaryIndexedTree(){}
    BinaryIndexedTree(int _n):n(_n+1), t(_n+1){}
    void add(int k, Val val){
        k++;
        while(k < n){
            t[k] += val;
            k += (k&-k);
        }
    }
    Val sum(int k){
        Val r = 0;
        while(k > 0){
            r += t[k];
            k -= (k&-k);
        }
        return r;
    }
    Val sum(int l, int r){
        return sum(r) - sum(l);
    }
};
typedef BinaryIndexedTree<int> BIT;

int main(){
    int N, K;
    cin >> N >> K;
    const int MA = 1000001;
    BIT bit(MA);
    vi cnt(MA);
    rep(i, N){
        int W; scanf("%d", &W);
        if(W < 0){
            W = -W;
            if(cnt[W]){
                cnt[W]--;
                bit.add(W, -1);
            }
        } else{
            int sm = bit.sum(W, MA);
            if(sm < K){
                cnt[W]++;
                bit.add(W, 1);
            }
        }
    }
    int ans = bit.sum(MA);
    cout << ans << endl;
}