PASS

用学校 z/k的人看成绩 看那些在50%内

import java.util.Scanner;
 
public class Main {
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		while(sc.hasNext()) {
		int x = sc.nextInt();
		while (x-- > 0) {
			int n = sc.nextInt();
			int m = sc.nextInt();
			int k = sc.nextInt();
			int arr[] = new int[n];
			int sum[] = new int[m + 1];
			int count[] = new int[m + 1];
			int i = 0;
			int res = 0;
			for (; i < n / 2; ++i) {
				arr[i] = sc.nextInt();
				sum[arr[i]]++;
				count[arr[i]]++;
			}
			for (; i < n; i++) {
				arr[i] = sc.nextInt();
				count[arr[i]]++;
			}
			for(int i1 = 1 ; i1<= m ; i1++) {
				int temp = count[i1]/k;
				if(temp>=sum[i1])
					res+=sum[i1];
				else if(temp<sum[i1])
					res+=temp;
			}
			System.out.println(res);
		}
	}
}
}