import java.util.*;

class Main {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        String[] nmx = scanner.nextLine().split(" ", 3);
        int n = Integer.parseInt(nmx[0]);
        int m = Integer.parseInt(nmx[1]);
        int x = Integer.parseInt(nmx[2]);

        String[] line = scanner.nextLine().split(" ", m);
        int[] gates = new int[m];
        for (int i = 0; i < m; i++) {
            gates[i] = Integer.parseInt(line[i]);
        }

        int nCost = 0;
        int zCost = 0;
        for (int i = 0; i < m; i++) {
            if (gates[i] > x) {
                nCost++;
            }
            if (gates[i] < x) {
                zCost++;
            }
        }
        System.out.println(Math.min(nCost, zCost));
    }
}

/tmp/hf-datasets-cache/medium/datasets/42704881117311-config-parquet-and-info-qiankunmu-Project_CodeNet-896c9d36/hub/datasets--qiankunmu--Project_CodeNet_Python800_and_Java250/snapshots/c899fde44a77ba1cc14973ed3de064e4ff3aadc7/Project_CodeNet_Java250.tar.gz