#include <bits/stdc++.h>
using namespace std;


int main() {
    int N,K;
    cin >> N >> K;
    int checker =0;
    map<int, int> poker; 
    for(int i=0;i<N;i++){
        int Ai;
        cin >> Ai;
        if (poker.count(Ai)) poker[Ai]++;
        else poker[Ai]=1;
    }
    int M=0;
    int D=0;
    for(auto p: poker){
        int d=p.first;
        int m=p.second;
        if (M<m){
          M=m;
          D=d; 
        }       
    }
    if(poker.count(0) && D!=0){ 
      if (M>=(K-poker.at(0))) checker=1;
    }
    else if(M>=K) checker=1;

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