import java.util.*;
public class Main {
    public static void main(String[] args) {
		Scanner scan = new Scanner(System.in);
		int n = scan.nextInt();
		int m = scan.nextInt();
		for(int i = 0 ; i < m ; i++){
			int a = scan.nextInt();
			int b = scan.nextInt();
			int c = scan.nextInt();
		}
		System.out.println(n);
    }
}