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#include <iostream>
#include <array>

int main() {
    int n;
    int k;
    constexpr int MAX_RESULT = 120;
    std::array<int, MAX_RESULT + 1> counts{0};

    std::cin >> n >> k;

    for(int i = 0 ; i < n; ++i) {
        int a = 0;
        std::cin >> a;
        // Count the number of each actual result achieved
        ++counts[a];
    }

    int negExtra = k;
    // Give away the t-shirts starting form top ranks
    for(int i = MAX_RESULT; negExtra > 0 && i >= 0; --i) {
        negExtra -= counts[i];
    }
    std::cout << k - negExtra << std::endl;
}