import java.util.Scanner;
public class Main {
    public static void main(String[] args){
    
    Scanner sc = new Scanner(System.in);
    int n =sc.nextInt();
    int k =sc.nextInt();
    int[]s = new int[n];
    
    for(int i=0; i<k; i++) {
    	int d = sc.nextInt();
    	for(int j=0; j<d; j++) {
    		int a = sc.nextInt();
    			s[a-1]++; 
    	}	
    }
    int cou = 0;
    for(int i=0; i<n; i++) {
    	if(s[i]==0) {
    		cou++;
    	}
    }
    System.out.println(cou);
    }
}

/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