#include <iostream>
#include <vector>

using namespace std;
using ll = long long;

constexpr int iINF = 1'000'000'000;
constexpr ll llINF = 1'000'000'000'000'000'000;


int main () {
    int N, K; cin >> N >> K;
    vector<int> A(N);
    for (int i = 0; i < N; i++) cin >> A[i];

    // カード0は理由なく選んでOK
    // 残りを埋められるかだけ判定。これは線形

    vector<int> count(N + 1);
    for (int i = 0; i < N; i++) count[A[i]]++;

    bool ok = false;
    for (int i = 1; i <= N; i++) if (K <= count[0] + count[i]) ok = true;

    if (ok) {
        cout << "Yes\n";
    }
    else {
        cout << "No\n";
    }
}