/* -*- coding: utf-8 -*-
 *
 * 2777.cc:  No.2777 Wild Flush - yukicoder
 */

#include<cstdio>
#include<algorithm>
 
using namespace std;

/* constant */

const int MAX_N = 100000;

/* typedef */

/* global variables */

int as[MAX_N];

/* subroutines */

/* main */

int main() {
  int n, k;
  scanf("%d%d", &n, &k);
  for (int i = 0; i < n; i++) scanf("%d", as + i);

  sort(as, as + n);
  int c0 = 0;

  for (int i = 0; i < n;) {
    int j = i;
    while (i < n && as[j] == as[i]) i++;
    if (as[j] == 0) {
      c0 = i - j;
      if (c0 >= k) { puts("Yes"); return 0; }
    }
    else {
      if (c0 + (i - j) >= k) { puts("Yes"); return 0; }
    }
  }

  puts("No");
  return 0;
}