import java.io.*;

public class Solution {
    public static void main(String[] args) throws Exception {
        //write your code here
        BufferedReader reader = new BufferedReader (new InputStreamReader(System.in));
        int a = Integer.parseInt(reader.readLine());
        int b = Integer.parseInt(reader.readLine());
        int c = Integer.parseInt(reader.readLine());
        if(a > 0 && b > 0 && c > 0)
        {
            System.out.println(3);
        }
        else if(a > 0 && b > 0 && c < 0)
        {
            System.out.println(2);
        }
        else if(a > 0 && b < 0 && c >0)
        {
            System.out.println(2);
        }
        else if(a < 0 && b > 0 && c > 0)
        {
            System.out.println(2);
        }
        else if(a > 0 && b < 0 && c < 0)
        {
            System.out.println(1);
        }
        else if(a < 0 && b > 0 && c < 0)
        {
            System.out.println(1);
        }
        else if(a < 0 && b < 0 && c > 0)
        {
            System.out.println(1);
        }
        else if(a <= 0 && b <= 0 && c <= 0)
        {
            System.out.println(0);
        }
    }
}