#include <stdio.h>

int main()
{
	int N,M,A[100],i,all_votes = 0,count = 0;
	scanf("%d %d",&N,&M);
	for (i = 0;i < N;i++){
		scanf("%d",&A[i]);
	}
	for (i = 0;i < N;i++){
		all_votes += A[i];
	}
	for (i = 0;i < N;i++){
		if (A[i] >= (int)(all_votes / 4 / M)){
			count++;
		}
	}
	if (count >= M){
		printf("Yes\n");
	}else{
		printf("No\n");
	}
}
