#include<bits/stdc++.h>
using namespace std;
using ll=long long;
#define rep(i,s,t) for(ll i=s;i<(ll)(t);i++)
#define rrep(i,s,t) for(ll i=(ll)(t)-1;i>=(ll)s;i--)
#define all(x) begin(x),end(x)
#define rall(x) rbegin(x),rend(x)

#define TT template<typename T>
TT using vec=vector<T>;
TT bool chmin(T &x,T y){return x>y?(x=y,true):false;}
TT bool chmax(T &x,T y){return x<y?(x=y,true):false;}

struct io_setup{
    io_setup(){
        ios::sync_with_stdio(false);
        cin.tie(nullptr);
        cout<<fixed<<setprecision(15);
    }
} io_setup;

const int C[6]={720,360,180,30,6,1};
const char S[6]={'C','M','S','R','o','.'};

int main(){
    int N,K;
    cin>>N>>K;
    int cnt=0;
    vector<int>V(N);
    for(int i=0;i<N;i++){
        int a;
        cin>>a;
        if(a==0)cnt++;
        else V[a-1]++;
    }
    int ma=0;
    for(int i=0;i<N;i++)chmax(ma,V[i]);
    ma+=cnt;
    if(ma>=K)cout<<"Yes\n";
    else cout<<"No\n";
}