#include<bits/stdc++.h>

using namespace std;

int main(){
    int n,k;
    cin >> n >> k;
    vector<int> a(n);
    vector<int> b(n + 1,0);
    for(int j = 0;j < n;j++){
        cin >> a[j];
        b[a[j]]++;
    }
    bool ans = 0;
    for(int j = 1;j <= n;j++){
        if(b[j] + b[0] >= k)ans = 1;
    }
    if(ans)cout << "Yes" << endl;
    else cout << "No" << endl;
    return 0;
}