#include <iostream>
#include <cstdio>
#include <cstring>
#include <vector>
#include <climits>
#include <algorithm>
#include <cmath>
#include <cstdlib>
#include <stack>
#include <queue>
#include <string>
#include <map>
#include <set>
#include <sstream>
#include <functional>
using namespace std;
typedef long long ll;
typedef unsigned long long ull;
#define FOR(i,a,b) for(int i=(a);i<(b);i++)
#define REP(i,n)  FOR(i,0,n)
#define CLEAR(d) memset((d), 0, (sizeof((d))))
#define ALL(c) (c).begin(), (c).end()
#define SORT(x) sort((x).begin(), (x).end())
#define RSORT(x) sort((x).begin(), (x).end(), greater<int>() )
#define SIZE(a) ((int)((a).size()))
#define MAX3(a, b, c) (max(max((a), (b)), (c)))
#define MIN3(a, b, c) (min(min((a), (b)), (c)))
#define MOD 1000000007
#define EPS 1e-5
#define PI  (acos(-1))
#define INF 10000000
struct edge{ int to, cost; };
//===================================================

#define MAX 1000010
// Binary Indexed Trees
template<class T> class BIT {
    vector<int> bit; int sz;
public:
    BIT(int n) : sz(n) { bit.resize(n + 1); }
    T sum(int i) { T s = 0; while (i > 0) { s += bit[i]; i -= i & -i; } return s; }
    T sum(int l, int r) { return sum(r) - sum(l - 1); }
    void add(int i, int x) { while (i <= sz) { bit[i] += x; i += i & -i; } }
};

int main()
{
    static BIT<int> bit(MAX);
    int n, k, w;
    cin >> n >> k;
    REP(i, n) {
        cin >> w;
        if (w > 0) {
            if (bit.sum(w, MAX) >= k) { continue; }
            bit.add(w, 1);
        }
        else {
            w = -w;
            if (bit.sum(w, w) == 0) { continue; }
            bit.add(w, -1);
        }
    }
    printf("%d\n", bit.sum(0, MAX));
    return 0;
}