#include <bits/stdc++.h>

using namespace std;

void fast_io() {
    ios_base::sync_with_stdio(false);
    cin.tie(nullptr);
}

int main() {
    fast_io();
    int n, k;
    cin >> n >> k;
    vector<int> cnt(n + 1);
    for (int i = 0; i < n; i++) {
        int x;
        cin >> x;
        cnt[x]++;
    }
    for (int i = 1; i <= n; i++) {
        if (cnt[0] + cnt[i] >= k) {
            cout << "Yes" << endl;
            return 0;
        }
    }
    cout << "No" << endl;
}