import java.util.Scanner;
 
class Restaurant {
    public static void main(String[] args) {
        Scanner scan = new Scanner(System.in);
 
        int count = scan.nextInt();
 
        String[] ingredientName = new String[count];
        boolean[] vegetarian = new boolean[count];
 
        for (int i=0; i<count; i++) {
            // Scan ingredient, price, vegetarian/not, and calories
            ingredientName[i] = scan.next();
            vegetarian[i] = scan.nextBoolean();
        }
 
        System.out.println("Number of vegetarian ingredients: " + getVegetarian(vegetarian));
    }
 
    public static int getVegetarian(boolean[] list) {
        int count = 0;
        for (int i=0; i<list.length; i++) {
            if (list[i] == true) {
                count++;
            }
        }
        return count;
    }
 
}

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MwpQb3RhdG8KdHJ1ZQpBcHBsZQp0cnVlClN0ZWFrCmZhbHNl

3
Potato
true
Apple
true
Steak
false