import java.util.Scanner;

public class AdultCountingProgram {
    public static void main(String[] args) {
 		int  numPeople, age, adults;

    	// Find out how many people there are
    	System.out.print("How many people are there ? ");
    	numPeople = new Scanner(System.in).nextInt();

    	// Now count the adults
    	adults = 0;
    	for (int i=1; i<=numPeople; i++) {
        	System.out.print("How old is person " + i + " ?  ");
        	age = new Scanner(System.in).nextInt();
        	if (age >= 18)
            	adults++;
    	}
    	System.out.println("There are " + adults + " adults.");
	}
}