#include<bits/stdc++.h>
using namespace std;
//#include<atcoder/all>
//using namespace atcoder;
using ll = long long;
using ull = unsigned long long;
#define rep(i,n) for(int i=0;i<(n);++i)
const int m = 100010;
int a[3<<17];
int main(){
	ios::sync_with_stdio(false);
	cin.tie(nullptr);
	int n,k;
	cin>>n>>k;
	for(int i=0;i<n;++i){
		int mark;cin>>mark;
		a[mark]++;
	}
	int z = a[0];
	int cnt = 0;
	for(int i=1;i<m;++i){
		if(a[i]+z>cnt)cnt = a[i]+z;
	}

	if(cnt>=k)cout << "Yes" << endl;
	else cout << "No" << endl;
}