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#include <iostream>
#include <vector>
#include <algorithm>
#include <fstream>

using namespace std;


#ifdef USE_FILE_CIN
ifstream input("kos.in");
#define cin input
#endif



int main() {
    int playerCount, minTshirtCount;
    vector<int> points;

    cin >> playerCount >> minTshirtCount;
    points.resize(playerCount);

    for (int i = 0; i < playerCount; i++) {
        cin >> points[i];
    }

    sort(points.begin(), points.end(), greater<int>());
    int result = minTshirtCount;

    while (result < playerCount && (points[result] == points[result - 1])) {
        result ++;
    }
    
    cout << result;

    return 0;
}