#include<stdio.h>
int main(){
  int N,M,A[100],i,j,k,goukei=0,counter=0;
  scanf("%d %d",&N,&M);
  for(i=0;i<N;i++){
    scanf("%d",&A[i]);
  }
 
  for(j=0;j<N;j++){
    goukei=goukei+A[j];
  }

  for(i=0;i<N;i++){
    if(goukei/4/M<A[i]){
      counter++;
    }
  }
  if(counter>=M){
    printf("Yes\n");
  }
  else{
    printf("No\n");
  }
}
    
  