#include <stdio.h>

int main(){
  int N,M,canSelect=0;
  scanf("%d %d",&N,&M);
  
  int syohin[N];
  double sotokuhyo=0.0;
  for(int i=0;i<N;i++){
    sotokuhyo += syohin[i];
  }
  
  for(int j=0;j<N;j++){
     if(syohin[j] >= (sotokuhyo/(4*M))) canSelect++;
  }
  
  if(canSelect>=M){
    printf("Yes");
  }else{
    printf("No");
  }
}