import java.util.Scanner;
public class Main {
public static void main(String[] args) {
Scanner sc = new Scanner(System.in);
sc.nextInt();
int m = sc.nextInt();
int x = sc.nextInt();
int leftFeeAreaCnt = 0;
int rightFeeAreaCnt = 0;
for (int i = 0; i < m; i++) {
int feeArea = sc.nextInt();
if (feeArea < x) {
leftFeeAreaCnt++;
} else if (x < feeArea) {
rightFeeAreaCnt++;
}
}
if (leftFeeAreaCnt <= rightFeeAreaCnt) {
System.out.println(leftFeeAreaCnt);
} else {
System.out.println(rightFeeAreaCnt);
}
}
}
/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