import java.util.*; 
import java.io.*;

public class Main {
    static StringTokenizer st;
    static BufferedReader br;  
    static PrintWriter out;
 
    public static void main(String[] args) throws IOException {
        br = new BufferedReader(new InputStreamReader(System.in));

        int N = nextInt();
        int M = nextInt();

        int[] input = new int[N];

        int total = 0;
        for (int x=0; x<N; x++) {
            input[x] = nextInt();
            total += input[x];
        }
        
        Arrays.sort(input);

        // read top M
        for (int x=N-1; x>N-1-M; x--) {
            if( input[x] * 4 * M < total){
                System.out.println("No");
                return;
            };
        }

        System.out.println("Yes");

    }
    
      
    public static int nextInt() throws IOException {
        return Integer.parseInt(next());
    }
    public static long nextLong() throws IOException {
        return Long.parseLong(next());
    }

    public static double nextDouble() throws IOException {
        return Double.parseDouble(next());
    }

    static String next() throws IOException {
        while (st == null || !st.hasMoreTokens())
            st = new StringTokenizer(br.readLine().trim());
        return st.nextToken();
    }
} import java.util.*; util.* java import java.io.*; io.* java public class Main {
    static StringTokenizer st;
    static BufferedReader br;  
    static PrintWriter out;
 
    public static void main(String[] args) throws IOException {
        br = new BufferedReader(new InputStreamReader(System.in));

        int N = nextInt();
        int M = nextInt();

        int[] input = new int[N];

        int total = 0;
        for (int x=0; x<N; x++) {
            input[x] = nextInt();
            total += input[x];
        }
        
        Arrays.sort(input);

        // read top M
        for (int x=N-1; x>N-1-M; x--) {
            if( input[x] * 4 * M < total){
                System.out.println("No");
                return;
            };
        }

        System.out.println("Yes");

    }
    
      
    public static int nextInt() throws IOException {
        return Integer.parseInt(next());
    }
    public static long nextLong() throws IOException {
        return Long.parseLong(next());
    }

    public static double nextDouble() throws IOException {
        return Double.parseDouble(next());
    }

    static String next() throws IOException {
        while (st == null || !st.hasMoreTokens())
            st = new StringTokenizer(br.readLine().trim());
        return st.nextToken();
    }
} Main static StringTokenizer st; st static BufferedReader br; br static PrintWriter out; out public static void main(String[] args) throws IOException {
        br = new BufferedReader(new InputStreamReader(System.in));

        int N = nextInt();
        int M = nextInt();

        int[] input = new int[N];

        int total = 0;
        for (int x=0; x<N; x++) {
            input[x] = nextInt();
            total += input[x];
        }
        
        Arrays.sort(input);

        // read top M
        for (int x=N-1; x>N-1-M; x--) {
            if( input[x] * 4 * M < total){
                System.out.println("No");
                return;
            };
        }

        System.out.println("Yes");

    } main {
        br = new BufferedReader(new InputStreamReader(System.in));

        int N = nextInt();
        int M = nextInt();

        int[] input = new int[N];

        int total = 0;
        for (int x=0; x<N; x++) {
            input[x] = nextInt();
            total += input[x];
        }
        
        Arrays.sort(input);

        // read top M
        for (int x=N-1; x>N-1-M; x--) {
            if( input[x] * 4 * M < total){
                System.out.println("No");
                return;
            };
        }

        System.out.println("Yes");

    } br = new BufferedReader(new InputStreamReader(System.in)) br new BufferedReader(new InputStreamReader(System.in)) int N = nextInt(); N nextInt() nextInt int M = nextInt(); M nextInt() nextInt int[] input = new int[N]; input new int[N] N int total = 0; total 0 for (int x=0; x<N; x++) {
            input[x] = nextInt();
            total += input[x];
        } int x=0; int x=0; x 0 x<N x N x++ x++ x {
            input[x] = nextInt();
            total += input[x];
        } {
            input[x] = nextInt();
            total += input[x];
        } input[x] = nextInt() input[x] input x nextInt() nextInt total += input[x] total input[x] input x Arrays.sort(input) Arrays.sort Arrays input for (int x=N-1; x>N-1-M; x--) {
            if( input[x] * 4 * M < total){
                System.out.println("No");
                return;
            };
        } int x=N-1; int x=N-1; x N-1 N 1 x>N-1-M x N-1-M N-1-M N 1 M x-- x-- x {
            if( input[x] * 4 * M < total){
                System.out.println("No");
                return;
            };
        } {
            if( input[x] * 4 * M < total){
                System.out.println("No");
                return;
            };
        } if( input[x] * 4 * M < total){
                System.out.println("No");
                return;
            } input[x] * 4 * M < total input[x] * 4 * M input[x] * 4 * M input[x] input x 4 M total {
                System.out.println("No");
                return;
            } System.out.println("No") System.out.println System.out System System.out "No" return; System.out.println("Yes") System.out.println System.out System System.out "Yes" String[] args args public static int nextInt() throws IOException {
        return Integer.parseInt(next());
    } nextInt {
        return Integer.parseInt(next());
    } return Integer.parseInt(next()); Integer.parseInt(next()) Integer.parseInt Integer next() next public static long nextLong() throws IOException {
        return Long.parseLong(next());
    } nextLong {
        return Long.parseLong(next());
    } return Long.parseLong(next()); Long.parseLong(next()) Long.parseLong Long next() next public static double nextDouble() throws IOException {
        return Double.parseDouble(next());
    } nextDouble {
        return Double.parseDouble(next());
    } return Double.parseDouble(next()); Double.parseDouble(next()) Double.parseDouble Double next() next static String next() throws IOException {
        while (st == null || !st.hasMoreTokens())
            st = new StringTokenizer(br.readLine().trim());
        return st.nextToken();
    } next {
        while (st == null || !st.hasMoreTokens())
            st = new StringTokenizer(br.readLine().trim());
        return st.nextToken();
    } while (st == null || !st.hasMoreTokens())
            st = new StringTokenizer(br.readLine().trim()); st == null || !st.hasMoreTokens() st == null st null !st.hasMoreTokens() st.hasMoreTokens() st.hasMoreTokens st st = new StringTokenizer(br.readLine().trim()) st new StringTokenizer(br.readLine().trim()) return st.nextToken(); st.nextToken() st.nextToken st public class Main {
    static StringTokenizer st;
    static BufferedReader br;  
    static PrintWriter out;
 
    public static void main(String[] args) throws IOException {
        br = new BufferedReader(new InputStreamReader(System.in));

        int N = nextInt();
        int M = nextInt();

        int[] input = new int[N];

        int total = 0;
        for (int x=0; x<N; x++) {
            input[x] = nextInt();
            total += input[x];
        }
        
        Arrays.sort(input);

        // read top M
        for (int x=N-1; x>N-1-M; x--) {
            if( input[x] * 4 * M < total){
                System.out.println("No");
                return;
            };
        }

        System.out.println("Yes");

    }
    
      
    public static int nextInt() throws IOException {
        return Integer.parseInt(next());
    }
    public static long nextLong() throws IOException {
        return Long.parseLong(next());
    }

    public static double nextDouble() throws IOException {
        return Double.parseDouble(next());
    }

    static String next() throws IOException {
        while (st == null || !st.hasMoreTokens())
            st = new StringTokenizer(br.readLine().trim());
        return st.nextToken();
    }
} public class Main {
    static StringTokenizer st;
    static BufferedReader br;  
    static PrintWriter out;
 
    public static void main(String[] args) throws IOException {
        br = new BufferedReader(new InputStreamReader(System.in));

        int N = nextInt();
        int M = nextInt();

        int[] input = new int[N];

        int total = 0;
        for (int x=0; x<N; x++) {
            input[x] = nextInt();
            total += input[x];
        }
        
        Arrays.sort(input);

        // read top M
        for (int x=N-1; x>N-1-M; x--) {
            if( input[x] * 4 * M < total){
                System.out.println("No");
                return;
            };
        }

        System.out.println("Yes");

    }
    
      
    public static int nextInt() throws IOException {
        return Integer.parseInt(next());
    }
    public static long nextLong() throws IOException {
        return Long.parseLong(next());
    }

    public static double nextDouble() throws IOException {
        return Double.parseDouble(next());
    }

    static String next() throws IOException {
        while (st == null || !st.hasMoreTokens())
            st = new StringTokenizer(br.readLine().trim());
        return st.nextToken();
    }
} Main
import java.util.*; 
import java.io.*;

public class Main {
    static StringTokenizer st;
    static BufferedReader br;  
    static PrintWriter out;
 
    public static void main(String[] args) throws IOException {
        br = new BufferedReader(new InputStreamReader(System.in));

        int N = nextInt();
        int M = nextInt();

        int[] input = new int[N];

        int total = 0;
        for (int x=0; x<N; x++) {
            input[x] = nextInt();
            total += input[x];
        }
        
        Arrays.sort(input);

        // read top M
        for (int x=N-1; x>N-1-M; x--) {
            if( input[x] * 4 * M < total){
                System.out.println("No");
                return;
            };
        }

        System.out.println("Yes");

    }
    
      
    public static int nextInt() throws IOException {
        return Integer.parseInt(next());
    }
    public static long nextLong() throws IOException {
        return Long.parseLong(next());
    }

    public static double nextDouble() throws IOException {
        return Double.parseDouble(next());
    }

    static String next() throws IOException {
        while (st == null || !st.hasMoreTokens())
            st = new StringTokenizer(br.readLine().trim());
        return st.nextToken();
    }
}