package yukiCoder;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;

public class No00637 {

	public static void main(String[] args) {
		BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(System.in));
		String[] input = new String[5];
		StringBuilder builder = new StringBuilder();

		try {
			input = bufferedReader.readLine().split(" ");

			for(int i = 0 ; i < input.length ; i++) {
				int n =Integer.parseInt(input[i]);
				if (n%3 == 0 && n%5 == 0) {
					builder.append("FizzBuzz");
				} else if (n%5 == 0) {
					builder.append("Buzz");
				} else if (n%3 == 0) {
					builder.append("Fizz");
				} else {
					builder.append(n);
				}
			}
			System.out.println(builder.length());
		} catch (IOException e) {
			e.printStackTrace();
		}

	}

}