#include <bits/stdc++.h>
using namespace std;
using ll = long long;
const int INF = 1e9 + 10;
const ll INFL = 4e18;

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

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

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

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